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Old 07-13-2014, 2:09 PM
mrrabbit mrrabbit is offline
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Default Ammo Selection Guide for the Sig Sauer Mosquito and .22LR Semi-Autos in General

*UPDATED - 1/31/2016 - 2 Additional Ammunition Tested - See Post #4 For Updated PDF and Post #40 for Test Details*


INTRODUCTION


The Sig Sauer Mosquito .22LR Semi-Automatic handgun is often described as a "Jam-O-Matic", a "POS", "finicky" with ammunition and as a firearm that only eats CCI Mini-Mags.

Furthermore, many attempting to fix their shortcomings with the Sig Sauer Mosquito will resort to feed ramp polishing among other things to supposedly "fix" the reported problems with the Sig Sauer Mosquito.

Even worse, some will report broken frames and forward barrel/slide cracking and warping.

This guide operates from the position that most if not all of the above are the result of:

1. Operator failure to read the manual.
2. Operator error.
3. Operator lack of understanding of semi-auto cycling requirements, needs and tolerances for in-battery operation.
4. Operator attitude that is incompatible with proper tool utilization.
5. Operator failure to distinguish between cheap bulk and quality packed ammunition.

Overall, this guide aims to assist YOU as the new owner of a Sig Sauer Mosquito in getting off to a good start at the shooting range with little or no hiccups.




PREREQUISITES


1. A total brain flush of any verbiage you have received from others about the Sig Sauer Mosquito.

2. A total brain flush of the "I should be able to shoot anything I want whenever I want wherever I want" attitude that is common with individuals who are quick to blame the tool they are trying to use for any shortcomings.

3. Attention to detail.




UNPACKING AND PREPPING THE SIG SAUER MOSQUITO


As stated clearly in the manual - the Sig Sauer Mosquito is shipped coated inside and out in a preservative that must be removed. Simply clean the firearm as you would any other firearm - and then proceed to lubricate the firearms as directed in the manual - and in the locations noted.

When you field strip the firearm - note that the recoil spring has a specific orientation. The wide-mouth portion is oriented toward the end of the barrel. The narrow-mouth portion is oriented toward the recoil spring seat. The recoil guide rod has a circular base that is also oriented toward and into the seat.

The slide has a tiny hole in it - situated where the extractor pivot point would be located. Make certain you place a drop of lubricant in that hole. This lubricant can be CLP - or you can use just about any light-weight lubricant.

Using a finger, physically manipulate the tip of the extractor outward and then release it. It should be able to close freely on its own without hesitation or stickiness. Do this several times over...

Expect to lubricate the extractor pivot point several times over the first 1000 rounds as you are breaking in the Sig Sauer Mosquito. An extractor that sticks in the open position is an extractor that simply will not remove a cartridge.

It's not rocket science...simply visualizing it makes it pretty obvious.

Reassemble the firearm as shown in the manual. Make certain that when engaging the slide release - the slide closes 100% on its own without any assistance whatsoever.

You should never ever have to baby a slide to the fully closed position on a semi-automatic firearm.

Near the back of the Sig Sauer Mosquito user manual are a couple pages on functionality testing. These are excellent pages provided by Sig Sauer and are worth reading. Take the time to read them and do a functionality test of your new Sig Sauer Mosquito.

Assuming all is well...




AMMUNITION PRODUCT OFFERINGS SELECTION FOR THE SIG SAUER MOSQUITO AND .22LR SEMI-AUTOMATICS IN GENERAL


For ALL semi-automatic firearms - timing is everything.

.22LR semi-automatic firearms - both in long gun and handgun form are no different in this regard. If anything sticks, hesitates, slips or provides too little or too much power in the "in-battery" or "cycling" equation - Failure-To-Feed, Failure-To-Eject and Stove Pipes will be the bane of your Sig Sauer Mosquito experience and with semi-automatics in general.

Selecting the right ammunition is a crucial part of ensuring your .22LR semi-automatic firearm will cycle in a reliable fashion. The Sig Sauer Mosquito is no exception...


Cheap Bulk Packed versus Quality Packed Ammunition Offerings


When you compare cheap bulk pack ammunition with quality packed ammunition - what you really comparing more than anything else is the quality of the brass casing.

When a manufacturer produces brass casings on the production line - it is tested, filtered and sorted roughly as follows:


Brass Casings for Cheap Bulk Pack Product Offerings

Brass Casings for Quality Pack Product Offerings



The Problem With Cheap Bulk Pack Product Offerings


Cheap bulk pack ammunition products typically receive the cheaper lower quality brass. Either the brass expands too much upon use, or it is not consistently within specification for clean breech insertion and removal in a semi-automatic firearm. Either way - the potential for "stickiness" in the breech is higher.

If a case experiences "stickiness" in the breech - the extraction process can be delayed long enough to cause an FTE or Stove Pipe.

In the case of some batches of Winchester M22 1000 and 2000 round bulk pack ammunition - the casings expand so much that the extractor will crumple the rim and then let go of the casing. The end-user has to resort to physically removing the casing with their fingers or a tool.

While cheap bulk pack ammunition is perfectly fine for manually cycled bolt-action rifles and revolvers - they can be problematic for semi-automatics.

How does one recognize cheap bulk pack ammunition? If it is packaged in one of the following manners...

222 rounds loose in ONE box.
300 rounds racked in ONE box.
325 rounds loose in ONE can.
333 rounds loose in ONE box.
500 rounds loose in ONE box.
525 rounds loose in ONE box.
555 rounds loose in ONE box.
1400 rounds loose in ONE bucket.

...it is probably cheap bulk pack ammunition.

Some will have occurrences of decent quality brass such as CCI Tactical and CCI Swamp People Mini-Mag - but you can never be certain.


The Upside of Quality Pack Product Offerings


Quality pack product offerings from manufacturers of ammunition almost as a rule will contain brass casings of high quality. These casings will be more consistently within the specifications required to insure smooth breech insertion and removal. They will also have less expansion upon use further insuring that they are extracted quickly - thereby reducing the likelihood of an FTE or Stove Pipe.

Some manufacturers such as SK/Lapua will even go so far as to lubricate the brass used in their quality pack product offerings as an added insurance measure. SK Standard Plus, SK Rifle Match, Wolf Match Target and Wolf Match Extra are examples of quality pack product offerings that have lubricated brass casings.

How does one recognize quality packed ammunition? If it is packaged in one of the following manners...

50 rounds loose in a small box.
50 rounds racked in a small box.
50 rounds racked in a plastic slider.
100 rounds racked in a plastic slider.
500 round box containing 10 small boxes of 50 rounds loose each.
500 round box containing 10 small boxes of 50 rounds racked each.

...it is probably quality packed ammunition.

As an added bonus, they will have a higher price tag too...

From the stand point of the brass casing compatibility with a semi-automatic firearm - quality packed ammunition offerings in the manners noted above are your best bet.


The Bottom Line For This Section:

Using quality brass from quality packed ammunition offerings is the first important step to take in minimizing or even eliminating the occurrence of Failure-To-Eject and Stove Piping in a .22LR semi-automatic firearm such as the Sig Sauer Mosquito.




WEIGHT AND ROUND PROFILE SELECTION AND CAVEATS


.22LR rounds come with bullets in various flavors of weights and profiles. So how does this come into play for a .22LR semi-automatic firearm?

Look at it this way...

.22LR semi-automatic firearms tend to have very narrow and very steep feed ramps. If that isn't bad enough - they have very small and tight breeches with sharp edges.

A lot can go wrong...just a little jarring or bumping can knock the feeding process out of whack!


It's a given that the vast majority of your ROUND NOSE PROFILE bullets will be 40 GRAIN for weight.
It's a given that most of your HOLLOW POINT PROFILE bullets will be 36 GRAIN for weight.
It's a given that a sizable amount of your HOLLOW POINT PROFILE bullets will be 37 GRAIN for weight.


That's pretty much the norm...

However, this author will tell you the following:


1. 40 GRAIN ROUND NOSE offers the best feed ramp and insertion compatibility for reliable feeding.
2. 36 GRAIN and 37 GRAIN HOLLOW POINT - with a ROUNDER PROFILE offers the next best feed ramp and insertion compatibility for reliable feeding.

...meanwhile...

3. 36 GRAIN AND 37 GRAIN HOLLOW POINT - with a TRIANGULAR OR POINTY PROFILE offers less feed ramp and insertion compatibility in terms of reliable feeding.


Yes...you read that right! Not all hollow points are the same. If you carefully take the time to do so as you buy and use hollow point ammunition - take the time to compare them. You'll notice they vary in their actual profile from manufacturer to manufacturer. Notice which are more prevalent in cheap bulk pack product offerings...


As to the other profiles available out there - FLAT NOSE, POWER POINT and "TRIANGLE" NOSE - avoid using those in your semi-automatic .22LR firearms.




ROUND OR BULLET FINISH TREATMENT

Typically you will see three treatments for the bullets used in our .22LR cartridges or rounds:


Copper Plated Lead _____ _____ or Copper Washed Lead_____ _____

Lead _____ _____

'Some Weird-#$% Coating' _____ _____ _____


Copper plated or copper washed is perfectly fine. It's a little smoother on the feed ramp. It shoots cleaner allowing longer intervals between barrel cleaning. But it tends to cost a little more.

Just plain lead is perfectly fine. It shoots somewhat dirtier requiring more frequent cleaning. But it tends to cost a tad less than copper plated or copper washed. Oftentimes lead bullets will be coated in wax or oil which is perfectly normal.

As you probably guessed already - this author is not too fond of the 'some weird-#$% coating' that can be found on products like Winchester M22. It's a substitute used on very cheap bulk pack products - which this author refuses to use in his semi-automatic .22LR firearms to begin with. I suggest a "pass" on your part as well...


Continued next post...

Last edited by mrrabbit; 01-31-2016 at 5:09 PM..
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Old 07-13-2014, 2:10 PM
mrrabbit mrrabbit is offline
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VELOCITY IN FEET PER SECOND (FPS) CONSIDERATIONS FOR THE SIG SAUER MOSQUITO AND .22LR SEMI-AUTOMATICS IN GENERAL


The heart of a .22LR semi-automatic's "in-battery window" or "cycle window" is the recoil spring. A person with nothing more than a high school physics background already understands that one spring cannot handle the entire spectrum of something in a given confined window of time.

It is true that some springs are of better quality than others - but the rule of thumb does not change:


A given spring in a semi-automatic firearm is going to have a minimum Feet Per Second and maximum Feet Per Second allowance in ammunition for reliable cycling.


The lower you try to go in FPS - the more important quality brass AND brass lubrication becomes. I will get to this later...

The higher you go is generally better - but you can reach a point where Failure-To-Feed, Failure-To-Eject and Stove Pipes are reintroduced AND damage to the firearm can occur.


This author will tell you the following in regard to the Sig Sauer Mosquito:


It can shoot the highest quality subsonic match ammunition at 1050 FPS with reliable cycling AND it comes "alive" with quality ammunition at 1250-1265 FPS with reliable cycling!




CATEGORICAL AMMUNITION SELECTION GUIDELINES FOR THE SIG SAUER MOSQUITO AND .22LR SEMI-AUTOMATIC FIREARMS IN GENERAL


You read the concluding part of the last section correctly - you can toss out that myth that the Sig Sauer Mosquito ONLY shoots CCI Mini-Mags reliably!


Here's the generalized rules of thumb for selecting ammunition for the Sig Sauer Mosquito and .22LR semi-Automatics in general if reliable cycling is the goal:


BEST - Very Rare FTE or Stove Pipe

Ultimate Quality 40 Grain 1050 FPS Oiled Case Lead Round Nose
Quality 40 Grain 1250-1265 FPS Copper Plated Lead Round Nose
Quality 40 Grain 1250-1265 FPS Lead Round Nose


DECENT - Occasional FTF, FTE or Stove Pipe

Quality 40 Grain 1200-1240 FPS Copper Plated Lead Round Nose
Quality 40 Grain 1200-1240 FPS Lead Round Nose
Quality 36 Grain 1260-1280 FPS Copper Plated Lead Hollow Point
Quality 37 Grain 1260-1280 FPS Copper Plated Lead Hollow Point


If your goal is reliable cycling - then it's important to NOT let greed get the best of you...


CCI Swamp People 325 / Box 36 Grain 1265 FPS CPLHP != CCI Mini-Mag 100 / Slider 36 Grain 1265 FPS CPLHP

CCI Tactical 300 / Box 40 Grain 1200 FPS CPLRN != CCI Select 100 / Slider 40 Grain 1200 FPS LRN

Golden Bullet 525 / Box 36 Grain 1280 FPS CPLHP != Golden Bullet 50 / Box 36 Grain 1280 FPS CPLHP

SK Magazine 500 / Can 40 Grain 1050 FPS LRN != SK Standard Plus 50 / Box 40 Grain 1050 FPS LRN

Winchester Super-X 100 / Slider 40 Grain 1255 FPS CPLRN != Winchester Super-X BULK / ANY 40 Grain CPLRN / LPLRN


...resist the urge to assume the bulk version of your preferred ammunition will inherit the same quality as the quality pack versions. You MIGHT get lucky with CCI - but with Winchester you are asking for misery.




LIST OF VARIOUS AMMUNITION THIS AUTHOR HAS USED IN THE SIG SAUER MOSQUITO AND .22LR SEMI-AUTOMATIC FIREARMS IN GENERAL


[THE VERY BEST - ROUND NOSE]

Subsonic / Standard Velocity - 1050 FPS

Wolf Match Target 40 Grain 1050 FPS Lead Round Nose - 50 / Box
Wolf Match Extra 40 Grain 1050 FPS Lead Round Nose - 50 / Box
SK Standard Plus 40 Grain 1050 FPS Lead Round Nose - 50 / Box
SK Rifle Match 40 Grain 1050 FPS Lead Round Nose - 50 / Box

* The above SK/Lapua products performed without a single FTE for 200+ rounds using the default spring that comes already installed in the Sig Sauer Mosquito.


High Velocity - 1250 - 1265 FPS

Fiocchi 22FHVCRN 40 Grain 1250 FPS Copper Plated Lead Round Nose - 50 / Box
ATI Scorpion 40 Grain 1260 FPS Copper Plated Lead Round Nose - 50 / Box
SK High Velocity 40 Grain 1265 FPS Lead Round Nose - 50 / Box

* The Sig Sauer Mosquito really comes "alive" at these velocities in the noted products.



[DECENT - ROUND NOSE - BUT WITH RARE FTE]

High Velocity - 1235-1255 FPS

CCI Mini Mag 40 Grain 1235 FPS Copper Plated Lead Round Nose - 100 / Slider
Federal Game Shok 710 40 Grain 1240 FPS Copper Plated Lead Round Nose - 50 / Box
Aguila Super Extra 40 Grain 1250 FPS Copper Plated Lead Round Nose - 50 / Box
Remington Golden Bullet 40 Grain 1255 FPS Copper Plated Lead Round Nose - 100 / Slider


[DECENT - HOLLOW POINT - BUT WITH RARE FTF and/or FTE]

High Velocity - 1265-1280 FPS

CCI Mini-Mag 36 Grain 1265 FPS Copper Plated Lead Hollow Point - 100 / Slider
Remington Golden Bullet 36 Grain 1280 FPS Copper Plated Lead Hollow Point - 525 / Box

* These are the only hollow points this author has any trust in at this time in writing.

Trying to use Winchester Super-X quality pack hollow point results in a higher frequency of FTF. When switching to bulk pack Winchester Super-X hollow points, Federal Champion 745 hollow points and even CCI Mini-Mag in bulk pack products like the Troy Landy Swamp People product - the incidence of FTF AND FTE is even more noticeable.

With the seemingly exception of Remington Golden Bullet...cheaper bulk packed products only succeed in introducing frustration into the reliable cycling equation. I can imagine the Remington Golden Bullet hollow point in 50 / box packaging probably does slightly better on the assumption it will have better brass.




WRAPPING IT UP FOR THE PROCEEDING SECTIONS


If you want to have an enjoyable time with the Sig Sauer Mosquito...


1. Read the manual.
2. Clean and lubricate the firearm before first use.
3. Verify the extractor is able to freely close on it's own.
4. Do the functionality testing the manual describes.
5. Use quality brass which is typically packaged in small quantities in 50 count boxes and sliders and 100 count sliders.
6. Round nose profile feeds the best.

7a. Use the highest quality lubricated brass when attempting to use subsonic match grade ammunition.
7b. Try to attain the "sweet spot" that appears at approximately 1250 FPS for the Sig Sauer Mosquito in your high velocity ammunition acquisitions.



Continued next post...

Last edited by mrrabbit; 07-14-2014 at 2:13 PM..
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Old 07-13-2014, 2:10 PM
mrrabbit mrrabbit is offline
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ADDENDUM - THE GOOD, THE BAD AND THE UGLY - THE SIG SAUER MOSQUITO



[THE GOOD]


90 Percent Firearm

The Sig Sauer Mosquito is 90 percent the size of its larger caliber cousins in the Sig Sauer handgun lineup. It is small enough for small frame men and women to use while still usable for taller individuals with large hands. So long as the person with large hands is not too aggressive with lining up the thumbs in a cup hold - the firearm functions just fine. [SEE BELOW - THE BAD]


Typical Features of a Semi-Automatic Handgun

Switching to the Sig Sauer Mosquito from another .22LR semi-automatic handgun does not involve a significant learning curve. At a glance, the experienced user of semi-automatic handguns is quickly able to identify and use the slide release, firing pin safety, magazine disconnect and the take down lever. A little guess work or a quick read of the manual reveals the "odd-man-out" lever to be the lever used to safely release the cocked hammer.


Included Optional Spring

If the end user thinks a spring change may solve an ammunition related issue - an optional spring is included with the Sig Sauer Mosquito under the eggshell in a zip lock bag.


Included Optional Sights

If the end user thinks a front sight change can fix an "accuracy" issue - the same previously noted zip lock bag contains optional front sights.




[THE BAD]


Not Reliable With Cheap Bulk Pack Ammunition

The Sig Sauer Mosquito is not tolerant of poor quality brass ammunition casings. Since this is a typical feature of the brass casings used in cheap bulk pack offerings - a Sig Sauer Mosquito owner who wants reliable use of the firearm free of FTF, FTE and Stove Pipes must use the more expensive and sometimes harder to get quality pack offerings from ammunition manufacturers. This entails a 1-2 cent per round increase in costs with "plinking" ammunition - and as much as a 5-6 cent per round increase with match grade ammunition.


Many Failures To Feed Are Actually OPERATOR ERROR

If you have large hands and you do the following:

1. Force the web of your primary hand up hard against the beaver tail.
2. Cup with your secondary hand.
3. Aggressively line up your thumbs along the side of the slide / frame.

...you will crowd the slide release lever with the thumb knuckle of your primary hand. When that knuckle inadvertently touches the slide release lever while firing the firearm - the slide will lock open on the next cycle.

This will take on the appearance of a "Failure-To-Feed". This is actually not the case - it's a case of OPERATOR ERROR.


Solution?

Simply relax your aggressive grip on the primary hand - and relax the thumb placement and line up on both hands. The moment this correction is made - the problem disappears entirely.



Not Very Accurate AS-IS

As-is out of the case, the Sig Sauer Mosquito does not lend to accuracy with the trigger pull issue noted below in [THE UGLY] section below. If your intention is to kick cans at 7 and 15 yards - or just pepper paper at 15 and 25 yards - the Sig Sauer Mosquito does just fine as a "plinking" firearm.

But if your intention is to use the Sig Sauer Mosquito as a competitive precision target shooting instrument - you'll will immediately find yourself needing some custom trigger work done as well as some sight modifications or improvements made to the firearm. You will probably be better off just purchasing a firearm designed for that purpose to begin with such as the Smith and Wesson 22A w/ 7" barrel.




[THE UGLY]


Trigger Pull

The Sig Sauer Mosquito has a very hard trigger pull fresh out of the case or box. You might get lucky and it will lighten up after some use. But don't count on that happening. For every one where the trigger loosens up - another won't. You can't predict it. If the trigger refuses to lighten up or even gets harder to pull over time - contact Sig Sauer or your local Sig Sauer dealer for help.


Remington Thunderbolt

Affectionately called "Thunderturds" on Calgjuns.net, Remington Thunderbolts cycle just fine in the Sig Sauer Mosquito. However, this particular ammunition is unbelievably dirty. With the Sig Sauer Mosquito and with any .22LR firearm in general, this author strongly suggest having a brush, cleaner and lube ready in order to clean out the barrel every 50-100 rounds. The lead fouling caused by using Remington Thunderbolts is simply astounding!


Winchester M22

The Sig Sauer Mosquito barfs, chokes and suffers skipped heart beats with this ammunition. The same is reported by many semi-automatic owners in general. It suffers from expansion so extreme in some cases people have to use a "tool" to extract the casing from the breech. Severely deformed rims are noted with the unaided eye. Same for the expansion and furling at the tip of the casing. This is simply Winchester's
worst .22LR ammunition offering and is best relegated to bolt action rifles and revolvers. However, even some bolt-action owners reports issues as well...roll the dice if you really have to purchase Winchester M22.


Hyper-Velocity Ammunition - Cracked Frames, Slides and Barrels

As a general rule, it is wise to contact the manufacturer of any .22LR semi-automatic firearm to inquire about using Hyper-Velocity ammunition. Most if not all .22LR semi-automatic firearms are designed for regular use with High Velocity ammunition. Some are tested with Hyper-Velocity at the factory - and in cases of self-defense Hyper-Velocity in hollow-point is probably a better choice - THAT'S IF IT CYCLES RELIABLY!

Once you go past 1330 FPS with your .22LR ammunition you are starting to push the firearm. Increasing the velocity comes with correlating increases in pressure and harder slide / frame impacts from the increased energy. As anyone with common sense knows - this translates to accelerated fatigue and the earlier onset of catastrophic failure as the cyclic use continues.

There are many reports, both in text and video format on various forums and on Youtube of Sig Sauer Mosquitos with cracked frames, slides and barrels. Usually the immediate commentary on the reports is:


"The Sig Mosquito sucks!"
"What a POS!"


However a funny thing occurs...when you ask or pressure the owner for details on the ammunition used, whether up front or under considerable badgering the details come forth:


"Oh!....I was shooting CCI Stingers..."
"I've always run CCI Velocitors without problems until now..."
"I was having a great time with Aguila Interceptors and then the slide cracked..."


In most if not all cases, the owner simply did not know the general rule regarding High Velocity .22LR semi-automatics and the use of Hyper Velocity ammunition.


This author sticks to High Velocity ammunition under 1330 FPS. What is the actual FPS ceiling for cyclic use of the Sig Sauer Mosquito? I don't profess to know...

Sig Sauer will tell you that as general practice keeping at or above 1250 / 1260 FPS but below Hyper Velocity is not a bad idea.

If you think this author is lying, twisting facts or jerking YOU around - feel more than welcome to contact Sig Sauer Customer Support. They're pleasant folks to chat with!!!




FINAL THOUGHTS AND COMMENTS ON THE SIG SAUER MOSQUITO


Is the Sig Sauer Mosquito a great firearm for about $360.00 out the door at today's prices and regulatory fees? Absolutely!!!

Is the Sig Sauer Mosquito for everyone?

No!

If you are someone who treats firearms as the tools they are, reads the manual, is attentive to details AND uses tools in the manner they were designed for - the Sig Sauer Mosquito and YOU will get along just fine.

However, if you have the following attitudes:


"I should be able to shoot whatever I want, whenever I want and wherever I want - else it sucks!"

"I shouldn't have to read the manual or pay attention to details..."


...then all I can say is good luck with your toys. The Sig Sauer Mosquito simply won't be one of them.



That's all folks!


=8-)

Last edited by mrrabbit; 07-14-2014 at 11:25 AM..
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Old 07-13-2014, 8:45 PM
mrrabbit mrrabbit is offline
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ADDENDUM B - MORE COMPLETE LIST OF AMMUNITION FOR THE SIG SAUER MOSQUITO AND .22LR SEMI-AUTOMATICS IN GENERAL


Attached for download is a Microsoft Excel 97-2003 spreadsheet exported in PDF format. It is a more comprehensive list of ammunition I have used in the Sig Sauer Mosquito. What holds true for the Sig Sauer Mosquito in this spreadsheet is pretty consistent with other semi-automatics I use.

Note that there are a few more ammunition choices you can go with IF you can tolerate 1-2 FTEs or Stove Pipes over a couple magazines. These are in my honest opinion worthwhile using:


Federal Champion 510 40 Grain 1240 FPS Lead Round Nose - 50 / Box
CCI Blazer 40 Grain 1235 FPS Lead Round Nose - 50 / Box
Remington Thunderbolt 40 Grain 1255 FPS Lead Round Nose - 50 / Box
Federal Gold Medal HV 40 Grain 1200 FPS Lead Round Nose - 50 / Box
CCI Tactical 40 Grain 1200 FPS Copper Plated Lead Round Nose - 300 / Racked Box - BULK - Your Mileage Will Vary!!!


Remember though that Remington Thunderbolts are very dirty necessitating frequent cleaning...

Near the bottom you'll notice that the results with Eley Target, Eley Sport were no where as good as Wolf Match Target, Wolf Match Extra, SK Standard Plus and SK Rifle Match. The SK / Lapua subsonic match products performance in the Sig Sauer Mosquito is simply phenomenal!



Tests Planned for the Future

I'm hoping to get my hands on the following for future testing and spreadsheet updates:


[High Velocity]

SK High Velocity 40 Grain 1265 FPS Lead Hollow Point - 50 / Box
Fiocchi 22HVCHP 38 Grain 1263 FPS Copper Plated Lead Hollow Point - 50 / Box
RWS High Velocity 38 Grain 1263 FPS Copper Plated Lead Hollow Point - 50 / Box
Aguila Super Extra 38 Grain 1280 FPS Copper Plated Lead Hollow Point - 50 / Box


[Subsonic / Match Grade]

Fiocchi 22FHPSUB 40 Grain 1050 FPS Lead Hollow Point - 50 / Box
Fiocchi Exacta Rifle Super Match 40 Grain 1050 FPS Lead Round Nose
RWS Target Rifle 40 Grain 1082 FPS Lead Round Nose




UPDATE - 7/20/2014 - 3 ADDITIONAL AMMUNITION TESTED

Fiocchi 22FFHVCR 40 Grain 1250 FPS Copper Plated Round Nose - 1575 / Plano = Fantastic!!!
Norma TAC-22 40 Grain 1100 FPS Lead Round Nose - 50 / Box = Fantastic!!!
Aguila Rifle Match 40 Grain 1085 FPS Lead Nose 50 / Box = Excessive Serration Band on Bullet Causse FTF in Magazine Plus Occasional FTE - DO NOT RECOMMEND!!!




UPDATE - 3/29/2014 - 1 ADDITIONAL AMMUNITION TESTED

Remington Subsonic 38 Grain 1050 FPS Lead Hollow Point - 50 / Box = 5/50 FTF Plus Frequent Powder Burns on Hand and Forearm - OKAY IF YOU CAN TOLERATE IT.


UPDATE - 1/31/2016 - 2 ADDITIONAL AMMUNITION TESTED

Armscor Precision 36 Grain 1260 FPS Copper Plated Lead Hollow Point - Box 50 = GOOD!

Winchester T-22 40 Grain 1150 FPS Lead Round Nose - Box 50 = Okay BUT Don't Recommend for Sig Mosquito



Attached spreadsheet in PDF format has been updated...



=8-)
Attached Files
File Type: pdf 22LR_semi_auto_compatibility_01312016.pdf (202.3 KB, 84 views)

Last edited by mrrabbit; 01-31-2016 at 5:07 PM..
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Old 07-13-2014, 9:06 PM
Flopps1 Flopps1 is offline
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Very informative post. Thanks for putting in the time and sharing the knowledge.
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Old 07-14-2014, 5:20 AM
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ThortheDog ThortheDog is offline
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Yes, thank you. Appreciate the information about ammo for semi-autos.
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Old 07-14-2014, 6:59 AM
1badjack68 1badjack68 is offline
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Great information!!! Love my sig , and this is the guy I pm when ever I have a question about 22 ammo.
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Old 07-14-2014, 9:33 AM
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mrrabbit - I had a feeling that one of these days you would actually create a thread about this. I am glad that you did. It is very helpful and informative.

I, myself, am a happy owner of a Sig Mosquito. Besides the trigger pull, which you noted above, this gun is a fun plinker.

Thank you for doing this!
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Old 07-20-2014, 4:08 PM
mrrabbit mrrabbit is offline
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BUMP - 7/20/2014 - UPDATE
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Old 07-20-2014, 4:22 PM
surefire232 surefire232 is offline
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Sig Mosquito owner here with no problems so far. Been a good pistol even with the medium quality Remington ammo.
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Old 07-20-2014, 5:47 PM
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My two tone sig mosquito loves CCI minimags and stingers
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Old 07-27-2014, 9:44 PM
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Thanks for posting this thread. My mosquito ran ok but I fed it CCI 99% of the time. I did begin to see the spring weaken over time but there was a spare included with my reverse two tone model. I sold it and picked up a S&W M&P 15/22 and have never looked back.
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Old 09-06-2014, 1:57 AM
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BUMPED

Because we have another thread where it clear some folks have not read this guide.

=8-)
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Old 09-07-2014, 8:08 AM
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I would hope that all owners and those considering this pistol read your excellent thread. As you have noted, many have disparaged this pistol without realizing its potential. As with any rimfire one will find issues such as you have noted. Most runfire rifles/pistols like/dislike certain ammos and take some experience shooting to work out little quirks.

Good advice on the S&W pistol for target work. While not the best or most expensive its a good entry level pistol for target shooting. Mine is a good shooter with a Bushy TRS-25 mounted. Downside is the iron sights kinda suck.

To echo others, thanks for taking the time to educate/inform others about this pistol. Great review.
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Old 09-07-2014, 5:45 PM
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mr rabbit is a wise 22 professor
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Old 09-09-2014, 3:37 PM
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Great post!!
Very much appreciated!!
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Old 03-29-2015, 5:42 PM
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Visited Lost Altos today and took the opportunity to test Remington Subsonic.

In my looser tolerance two tone and broken in Mosquito:

20 rounds with no FTF's or FTE's or misfires.


In my somewhat tighter tolerance and yet to be broken in Mosquito:

30 rounds with 5 FTF, but no FTE's or misfires.


So overall, it's workable if you can tolerate an occasional FTF.


However, I do have two complaints:

1. Excessive powder burns on shooting hand and forearm - frequent enough to be really irritating.

2. Loose bullets - some could be freely turned in their casings.


PDF in post #4 has been updated and reposted in post #4.

Somehow I lost Fiocchi 22FFHVCR in my spreadsheet edit and juggle. Corrected and reattached 3/30/2015


=8-)

Last edited by mrrabbit; 03-30-2015 at 7:54 AM..
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Old 03-30-2015, 8:00 PM
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Very interesting. I've long wondered whether Rem Subsonic used a slow powder... looks like that's the case. Would be interested to see what kind of velocities you got out of the Sig.

I've got a small hill of the stuff since my CZ 452 flat out LOVES it, but I never thought it would function well in a pistol. Guess you never know until you try it.

Norma Tac-22 would be another good test candidate... never mind, I see you already did. Figured it would run well.
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Old 03-30-2015, 11:00 PM
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Quote:
Originally Posted by as_rocketman View Post
Very interesting. I've long wondered whether Rem Subsonic used a slow powder... looks like that's the case. Would be interested to see what kind of velocities you got out of the Sig.

I've got a small hill of the stuff since my CZ 452 flat out LOVES it, but I never thought it would function well in a pistol. Guess you never know until you try it.

Norma Tac-22 would be another good test candidate... never mind, I see you already did. Figured it would run well.
For the price paid at Cabela's for Norma TAC22, it's an awesome deal for quality ammo. Hope folks are grabbing all they can...

=8-)
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Old 03-31-2015, 5:20 AM
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Thank you, Mr. Rabbit, for this most excellent guide and article! Very much appreciated!
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Old 03-31-2015, 6:06 AM
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You're welcome!

=8-)
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Old 03-31-2015, 3:02 PM
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thanks again mr rabbit
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Old 10-17-2015, 8:48 AM
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Thank you so very much. I really want a Mosquito (pink one) and all I have heard is mostly bad things. I was willing to give up my hopes of buying one and going for the ruger SR22 (which is a little small for me). Now that I have read this I am going to go for what I really want and make my first gun purchase a Sig Mosquito.
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  #24  
Old 10-26-2015, 7:18 AM
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Pretty informative but with all the caveats about ammo choices,you've
convinced me to never buy one. Pete
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Old 10-26-2015, 11:35 AM
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Quote:
Originally Posted by GM4spd View Post
Pretty informative but with all the caveats about ammo choices,you've
convinced me to never buy one. Pete
I really do appreciate people participating in this thread / topic. But I would also appreciate if it those responding with criticism would not resort to sleight's of hand. The thread title is:


Ammo Selection Guide for the Sig Sauer Mosquito and .22LR Semi-Autos in General


The nature of bolt-actions and revolvers is that YOU are the timing mechanism. Absolutely nothing happens unless YOU make it happen. It is the fundamental reason why they are the most reliable. Until YOU die on the spot from a heart attack or a stroke, they'll operate 24/7/365. They'll also shoot crap ammo...


The nature of semi-autos and autos is that the timing mechanism is INTERNAL to the firearm - including the ammo used. If anything slips, hesitates, gets out of alignment or sticks - FTF and FTE become a problem.

To ensure that the ammo you use does not factor in as part of a functionality problem - QUALITY BRASS and POWER BAND (powder charge) are important.


Now remember, it's a free country. If YOU want to try your luck and go with cheap bulk pack ammo to save a couple pennies. Great! More power to you!

But if it fails, don't blame the tool.

=8-)

FYI to all following this thread. I'll be testing the following soon:

Winchester T22 1150 FPS Lead Round Nose
Armscor 1260 FPS Copper Plated Lead Hollow Point

I'll update the PDF as usual when I do.

=8-)
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Old 10-26-2015, 6:09 PM
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Quote:
Originally Posted by mrrabbit View Post
I really do appreciate people participating in this thread / topic. But I would also appreciate if it those responding with criticism would not resort to sleight's of hand. The thread title is:


Ammo Selection Guide for the Sig Sauer Mosquito and .22LR Semi-Autos in General
)


I don't know where the criticism is coming from,your own title is about 22
Semi autos. I've had a few 22 semis that shoot all the bulk ammo you listed
and there are some occasional failures but not enough to warrant not
shooting the stuff. My latest bulk shooter is a GSG 1911/22 that shoots just
about all the bulk ammo you listed. I have a 3lb trigger which can cause a
lite hammer strike which will cause a dud. I probably get about 3 failures
in 100 rds. The GSG costs a little more then the Mosquito but is very
accurate,especially with the good trigger. Good luck with the Mosquito. Pete

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Last edited by GM4spd; 10-29-2015 at 6:05 AM..
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Old 10-26-2015, 7:03 PM
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Quote:
Originally Posted by GM4spd View Post
Pretty informative but with all the caveats about ammo choices,you've
convinced me to never buy one. Pete
Your comment about "caveats" regarding ammo choice seems to paint me as painting the Mosquito as limited in ammo choice.

So it begs the question:

"Have you even bothered to open and read the PDF?"

=8-)
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Old 11-22-2015, 6:05 AM
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I just joined to say THANKS!! to mrrabbit for compiling all this information!

I picked up a NIB Mosquito a couple weeks ago and have had numerous issues with FTF/FTE using Federal Game-Shok, the closest thing I've been able to find to Mini-Mags. I tried one of the two boxes of Blazers I had, and was surprised that they ran flawlessly. If I had seen this first, I wouldn't have been surprised, and could have left the Game-Shok's at the store.

Thanks again!

TTT
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  #29  
Old 11-22-2015, 6:52 PM
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Quote:
Originally Posted by TicTocTach View Post
I just joined to say THANKS!! to mrrabbit for compiling all this information!

I picked up a NIB Mosquito a couple weeks ago and have had numerous issues with FTF/FTE using Federal Game-Shok, the closest thing I've been able to find to Mini-Mags. I tried one of the two boxes of Blazers I had, and was surprised that they ran flawlessly. If I had seen this first, I wouldn't have been surprised, and could have left the Game-Shok's at the store.

Thanks again!

TTT
Not surprised about the Game Shok. While it is Federal's quality pack...it's like calling Winchester SuperX in the 100 ct sliders "quality pack".

Tolerable improvement versus the bulk pack versions...

Federal Game Shok and Winchester Super X in the 50 and 100 ct packaging are worth tolerating...but I'll be honest, I'd rather have CCI Mini Mags, Fiocchi 22FHVCRN, Remington Golden CPLRN and SK High Velocity any day.

=8-)
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Old 01-08-2016, 8:47 AM
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For some reason I cannot get the PDF in #4 to load. mrrabbit any idea?
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Old 01-09-2016, 12:10 PM
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Quote:
Originally Posted by ga4boats917 View Post
For some reason I cannot get the PDF in #4 to load. mrrabbit any idea?
Dunno...

Tried refreshing the link to no avail. All I keep getting is an attempt to download a .GIF.



=8-(
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Old 01-09-2016, 12:20 PM
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Looks like Mosquito is very picky on ammo. Adding it to the no-go list together with issc m22.
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  #33  
Old 01-09-2016, 6:54 PM
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Re-uploaded the PDF in POST #4

Looks like it works again for now...

=8-)
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Old 01-10-2016, 6:36 PM
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Thank you!
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  #35  
Old 01-22-2016, 6:41 PM
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The only ammo I have run through mine is the CCI Mini Mags like the manual calls for. So far its been flawless. Thanks for compiling the data.


Sent from my iPhone using Tapatalk
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Old 01-22-2016, 7:19 PM
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Quote:
Originally Posted by JCMILLER View Post
The only ammo I have run through mine is the CCI Mini Mags like the manual calls for. So far its been flawless. Thanks for compiling the data.


Sent from my iPhone using Tapatalk
Going to update the PDF again in the next day or so. I keep getting old version mixed up with new versions.

Been kicking myself to get back to the range and test Armscor HV CPLHP and Winchester T22 Standard Velocity.

=8-)
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Old 01-22-2016, 8:03 PM
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Great info waiting to get my Mosquito out of jail! already picked up 500 rds cci mini mags

funny talking with another customer that has a kimber 1911 22 conversion said that it only likes the cci mini mags or will stove pipe/misfeed too!

oh bought the minimags cause it was in stock at Turners, nice to see 22 in stock again

Last edited by fnzen; 01-22-2016 at 8:10 PM..
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  #38  
Old 01-23-2016, 11:53 AM
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Thank you, mrrabbit for this excellent review, guide and post! I pick up a Mosquito tomorrow and will eventually get it to the range with some of the better ammo and post a review of my experience with each. I hope that Turner's has some good ammo when I pick it up.
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Old 01-24-2016, 9:23 AM
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Okay....

Finally got the correct PDF uploaded with the comprehensive list.

Next time around, after a couple new ammo products are tested, I'm going to rework the document into hopefully something better. I'm trying my best to keep it to one page - much easier that way when juggling papers at the range.

=8-)
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Old 01-31-2016, 5:02 PM
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UPDATE - TESTED (2) ADDITIONAL AMMO TODAY - LOS ALTOS ROD AND GUN

Armscor Precision - High Velocity CPHLP 1260 FPS
Winchester T-22 - Subsonic LRN 1150 FPS

Visited Los Altos Rod and Gun this morning. Was kinda cool seeing all the snow in the trees and on the sides of the 3 mile stretch of Highway 35 up to the range entrance. Was pretty cold, but worthwhile. Decent crowd as well.



Armscor Precison High Velocity Copper Plated Hollow Point at 1260 FPS is pretty good stuff.

30 / 30 in an already broken in Sig Mosquito - flawless to be honest.

28 / 30 in a partially broken in and very tight Sig Mosquito. 2 x FTF.

If you cannot find Fiocchi or CCI HV CPLRN, or if you cannot find CCI or Golden Bullet HV CPLHP . . .

. . . don't hesitate to grab Armscor Precision HV CPLHP when it's available.

I was very happy with it, and I'm certain you will be as well.



Winchester T-22 LRN 1150 FPS. I have to say that of all the Winchester products, this is probably the best brass and bullet quality you're going to get from Winchester.

It seemed almost to an exact copy or relabel of Remington Target LRN 1150 FPS.

14 / 20 in the broken in Sig Mosquito. 3 x FTF and 3 x FTE.
13 / 20 in the not quite broken in and tighter Sig Mosquito. 1 x FTF and 6 x FTe

If Winchester were to tighten the brass diameter just a hair, and add lubrication - it would probably perform pretty close to Norma TAC-22.

I will say this. Next time I get some more Winchester T-22, I'm going to try it out a Phoenix Arms HP22a. I'm pretty confident that pistol will cycle it smoothly and reliably just as it does with Remington Target.

But overall, I don't recommend running the Winchester T-22 through the Sig Mosquito.


See Updated PDF in Post #4


=8-)
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