Crimping

[black cx]

Purchased some 9mm ammo which is causing a failure to feed. RO believes the ammo is not crimped.

Bullet looks alot bigger than the Remington 9mm on the right..

I should have read the reviews..

https://www.targetsportsusa.com/targ...-p-110587.aspx

[hermosabeach]

ammo has a warranty / liability insurance.

If the ammo is not "crimped" you could see a bullet
1- easily fall out
2- get pushed back into the case creating a shorter cartridge length- this will also dramatically increase the pressure in the round.


What makes you or the guy at the range think the bullet does not have enough tension / crimp on the bullet?

the pictures are not great and show what appear to be 3 types of ammo?

[hermosabeach]

Did you save any of the rounds that gave you a failure to feed?
Are they shorter than a non chambered round?

you can upload pictures to this free hosting site.... then post the links here for a better picture size/ quality

https://imgbb.com/

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Drag and drop anywhere you want and start uploading your images now. 32 MB limit. Direct image links, BBCode and HTML thumbnails.




---
To Crimp, you need a reloading press and 9MM reloading dies....


--

last 2 questions

1- Magazines - who makes the magazines????
2- What type of firearm?

[black cx]

Here are additional pictures

Target Sports 9mm vs Remington 9mm

Did you save any of the rounds that gave you a failure to feed? Unfortunately, I did not keep the ammo from the range.
Are they shorter than a non chambered round? There is definitely a size difference. Should all 9's be the same size?
1- Magazines - who makes the magazines???? OEM
2- What type of firearm? It happened on (2) Glock 17s, (2) Glock 19s, CZ, and Glock 43

From the reviews, similar people had some concerns "oversized rounds"

https://www.targetsportsusa.com/target-sports-9mm-luger-ammo-124-grain-fmj-tsts9fmj-p-110587.aspx

These Target Sports = junk?

[hermosabeach]

ok
Different bullets will be loaded to different lengths... In one box of ammo, the cartridges should have the same overall length.

Different brands- different bullets- different weight- different shape

- Well SAAMI gives a Minimum and a maximum for each cartridge.
So comparing two different 9MM - as in your photo- it looks like 2 different brands and bullets -

-- many aftermarket magazines cause feeding and reliability issues. The Korea Glock mags were $11 for a reason....


-- if you take the barrel out of your Glock- hold the barrel with the muzzle towards the floor and drop a loaded round into the chamber, does it drop easily into the chamber? (please remove the barrel following all the rules of safety)

When you rotate the barrel so the muzzle is pointed up, does it fall out of the chamber?

Part of crimping is squishing the brass. If the brass is expanded and not crimped at all, it might not drop into the chamber all the way.
--
oversized will have the cartridge get stuck 1/2 the way into the chamber, not on the feed ramp


If the ammo is out of spec, the manufacturer should fix this for you. They don't want to pay for a KB- Ka Boom - blown up firearm and or blown up hand




Some terms/ specs
COAL - Cartridge Overall Average Length
SAAMI- https://saami.org/ - they make the specs for ammo

[black cx]

-- if you take the barrel out of your Glock- hold the barrel with the muzzle towards the floor and drop a loaded round into the chamber, does it drop easily into the chamber? (please remove the barrel following all the rules of safety)

When you rotate the barrel so the muzzle is pointed up, does it fall out of the chamber?

Part of crimping is squishing the brass. If the brass is expanded and not crimped at all, it might not drop into the chamber all the way.
--
oversized will have the cartridge get stuck 1/2 the way into the chamber, not on the feed ramp

Thank you for all the feedback. Per your tests, I think we found the issue. Glock 17 barrel with two different 9mm cartridges. Out of spec?

Last pic, it is stuck in the barrel when upside down..

[hermosabeach]

Glock factory barrels have a fairly large chamber. Helps with reliability.

If a round wont drop into a clean chamber... then it's either the barrel- even Glock makes things that need to be fixed... or the reloaded ammo is not in spec...


I'd call the re manufacturer and discuss this with them.

they should make it right

[ysr_racer]

Plunk test ?

[Distinct_Editz]

Thank you for all the feedback. Per your tests, I think we found the issue. Glock 17 barrel with two different 9mm cartridges. Out of spec?

Last pic, it is stuck in the barrel when upside down..

While it is unlikely for both cartridges to be out of spec, the O.D. of a completed cartridge case mouth should be a maximum of 0.380".

[operavoice]

Plunk test ?

/\ This /\

[bumpo628]

If the bullet is not seated to the proper depth it can also fail the plunk test. Not enough crimp (or removing the belled mouth) can also cause this as previously discussed.

If you have reloading equipment, you could just try pushing the bullet down a bit more to see if it fits in the barrel.

[baranski]

From the posted pic, looks like the OAL may be excessive.

[pacrat]

Thank you for all the feedback. Per your tests, I think we found the issue. Glock 17 barrel with two different 9mm cartridges. Out of spec?

Last pic, it is stuck in the barrel when upside down..

Ammo failing the "plunk test" is in no way indicative of an out of spec barrel. It is rather obvious that the round on the left is notably LONGER. Than the round on the right.

Most likely causation is as "baranski" states in below quote.

From the posted pic, looks like the OAL may be excessive.

OAL is controlled by bullet seating DEPTH. Left hand round has longer OAL. Because bullet sticks out of case farther. Causing it to FAIL PLUNK.

[black cx]

Ammo failing the "plunk test" is in no way indicative of an out of spec barrel. It is rather obvious that the round on the left is notably LONGER. Than the round on the right.

Most likely causation is as "baranski" states in below quote.



OAL is controlled by bullet seating DEPTH. Left hand round has longer OAL. Because bullet sticks out of case farther. Causing it to FAIL PLUNK.

Left is notably longer (overall length). It failed the plunk test as the bullet is lodged in the barrel with no play. Even with the barrel upside down, the bullet is lodged in there and wont fall out.

Is this something I can fix myself or needs to be sent back to the manufacturer?

[ptmn]

Can you fix it yourself? Yes
Should you fix it yourself? No

When you purchase ammo, the manufacturer has certain responsibilities, to include being within specs (SAAMI, CIP). With that responsibility comes liability for damage caused by being out of spec.

If you do anything to that ammo, to include a simple crimp or mod length, you just relieved them of some liability, even though you spent good money on that ammo.

If their crimp or COAL is off, who knows if they have squibs or double charges. If they do, I wouldn't reduce their liability by trying to "fix" their ammo yourself