Calguns.net  

Home My iTrader Join the NRA Donate to CGSSA Sponsors CGN Google Search
CA Semiauto Ban(AW)ID Flowchart CA Handgun Ban ID Flowchart CA Shotgun Ban ID Flowchart
Go Back   Calguns.net > FIREARMS DISCUSSIONS > Centerfire Rifles - Manually Operated
Register FAQ Members List Calendar Mark Forums Read

Centerfire Rifles - Manually Operated Lever action, bolt action or other non gas operated centerfire rifles.

Reply
 
Thread Tools Display Modes
  #1  
Old 05-09-2019, 12:29 PM
audiopro74's Avatar
audiopro74 audiopro74 is offline
Senior Member
 
Join Date: Jun 2010
Location: Livermore Ca.
Posts: 1,779
iTrader: 5 / 100%
Default Borrow scope lapping tool???

Anybody near Newark got a 30mm lapping tool I can borrow? Or rent for a six pack or something?
Just being cheap, and don’t plan on doing enough to “need” to buy one.
__________________
Why is everything good???? Illegal, Immoral, fattening???
Reply With Quote
  #2  
Old 05-09-2019, 6:32 PM
desertrider's Avatar
desertrider desertrider is offline
Senior Member
 
Join Date: Jul 2007
Posts: 1,466
iTrader: 69 / 100%
Default

I'm not going to knock lapping rings as a waste of time and effort, because there are situations when it may be the best option, but have you already eliminated all other variables causing the misalignment you're experiencing?

Do all mounting screw holes in the receiver align properly?

Are you using a one piece scope base or two piece?

If you're using a one piece scope rail, does it sit flush with no gaps?

Are you using name brand rings? (Beware of cheap, poorly machined rings)

Remember, you are combining several different systems, probably all manufactured in different facilities on different machines. All provide an opportunity for different tolerances between each other.

There's a good chance that if you eliminate all tolerance inconsistencies between the mating parts it may not be necessary to lap your rings.
Reply With Quote
  #3  
Old 05-09-2019, 6:52 PM
audiopro74's Avatar
audiopro74 audiopro74 is offline
Senior Member
 
Join Date: Jun 2010
Location: Livermore Ca.
Posts: 1,779
iTrader: 5 / 100%
Default

One piece steel rail, only has a super thin sheet of paper gap on the front. Rings are high end matched, matched rings. Not sure they need lapping, just trying to give this rifle every chance to bang steel at 1000. It’s my first foray into the long range game, and I don’t wanna it any corners.
Reply With Quote
  #4  
Old 05-09-2019, 7:30 PM
desertrider's Avatar
desertrider desertrider is offline
Senior Member
 
Join Date: Jul 2007
Posts: 1,466
iTrader: 69 / 100%
Default

I'm in the same boat right alongside you right now.

I recently bought a used 700P (PSS?) in .308 and I'm in the process of scoping it right now. I'm using a bunch of old components that I happen to have on hand.

Rem 700 action - Leupold MK IV one piece steel rail - Badger Ordnance steel rings - SWFA SS 10x42 scope.

I know I will have a tolerance stacking situation since there is a very slight gap between the receiver and rail at the back of the receiver. I'll bed the rail to correct that this weekend though.

Once I'm satisfied with the rail bedding, I'll use some green plastigage on the ring surface to look for any abnormalities in fit once the cap screws are torqued.

Last edited by desertrider; 05-09-2019 at 7:34 PM..
Reply With Quote
  #5  
Old 05-09-2019, 7:51 PM
audiopro74's Avatar
audiopro74 audiopro74 is offline
Senior Member
 
Join Date: Jun 2010
Location: Livermore Ca.
Posts: 1,779
iTrader: 5 / 100%
Default

Quote:
Originally Posted by desertrider View Post
I'm in the same boat right alongside you right now.

I recently bought a used 700P (PSS?) in .308 and I'm in the process of scoping it right now. I'm using a bunch of old components that I happen to have on hand.

Rem 700 action - Leupold MK IV one piece steel rail - Badger Ordnance steel rings - SWFA SS 10x42 scope.

I know I will have a tolerance stacking situation since there is a very slight gap between the receiver and rail at the back of the receiver. I'll bed the rail to correct that this weekend though.

Once I'm satisfied with the rail bedding, I'll use some green plastigage on the ring surface to look for any abnormalities in fit once the cap screws are torqued.
That should be a nice shooter. Are used to shoot my uncles PSS, that was his competition gun in the Navy. Love that thing! I’m waffling back-and-forth on lapping the rings, as I bought a nice set of matched MDT‘s. I like the idea with the plastic age though, I may try that. My alignment is perfect, my only concern is mating surface. So I guess I’ll see.
__________________
Why is everything good???? Illegal, Immoral, fattening???
Reply With Quote
  #6  
Old 05-09-2019, 9:38 PM
sigstroker sigstroker is offline
I need a LIFE!!
 
Join Date: Jan 2009
Location: not in CA
Posts: 17,328
iTrader: 8 / 100%
Default

The plastigage thing is for bearings, which are supposed to have a certain clearance. Scope rings aren't supposed to have any clearance.
Reply With Quote
  #7  
Old 05-09-2019, 9:58 PM
audiopro74's Avatar
audiopro74 audiopro74 is offline
Senior Member
 
Join Date: Jun 2010
Location: Livermore Ca.
Posts: 1,779
iTrader: 5 / 100%
Default

Quote:
Originally Posted by sigstroker View Post
The plastigage thing is for bearings, which are supposed to have a certain clearance. Scope rings aren't supposed to have any clearance.
True, but it will give you a good idea of mating surface. Run 2 strips. One on each edge.
__________________
Why is everything good???? Illegal, Immoral, fattening???
Reply With Quote
  #8  
Old 05-09-2019, 11:09 PM
sigstroker sigstroker is offline
I need a LIFE!!
 
Join Date: Jan 2009
Location: not in CA
Posts: 17,328
iTrader: 8 / 100%
Default

Did you read somewhere this was a good idea? The point of lapping is to have even contact along the whole surface of the ring. The plastigage won't tell you anything about that because if there are high spots, you won't be able to tell. Those high spots won't compress.
Reply With Quote
  #9  
Old 05-09-2019, 11:24 PM
audiopro74's Avatar
audiopro74 audiopro74 is offline
Senior Member
 
Join Date: Jun 2010
Location: Livermore Ca.
Posts: 1,779
iTrader: 5 / 100%
Default

And logically, if it’s not compressed, you know you don’t have good contact. Which would require lapping.

Running matched rings, there’s varying opinion on whether they need to be lapped. This could be used as an indicator.

And yes I know, lapping is always better. I’ve got plastigage in the tool box, but not a scope lapping tool.
Reply With Quote
  #10  
Old 05-10-2019, 4:37 AM
desertrider's Avatar
desertrider desertrider is offline
Senior Member
 
Join Date: Jul 2007
Posts: 1,466
iTrader: 69 / 100%
Default

Quote:
Originally Posted by sigstroker View Post
Did you read somewhere this was a good idea? The point of lapping is to have even contact along the whole surface of the ring. The plastigage won't tell you anything about that because if there are high spots, you won't be able to tell. Those high spots won't compress.
I've never read of using plastigage for this application, it's just something I've done to see if the mating surface is uniform.

If the flattened plastigage isn't uniform in it's spread I'd attribute that to imperfections in the machining of the rings.

At that point I'd consider lapping the rings, especially if I've done everything in my control to ensure proper fit starting at the receiver and working up.

I'll be mounting up my scope this weekend. Over the years I've mounted several scopes and have never found it necessary to lap a set of rings yet. That's been my experience, I'm no world class marksman, but I shoot reasonably well.
Reply With Quote
  #11  
Old 05-10-2019, 4:43 AM
MarikinaMan MarikinaMan is offline
Veteran Member
 
Join Date: Nov 2015
Posts: 4,866
iTrader: 28 / 100%
Default

I’m in West LA. I’ve got the Wheeler tool kit.

75 bucks cash deposit, get 65 back on return. Shipped at your cost. Pick up ok.

I’ve lapped a few rings. All of them showed high and low spots. Some more than others. You clamp down on imperfectly mounted or made rings, never seen perfect ones, you run the risk of torquing the scope tube. What happens when it’s torqued? Tracking can be affected. “can” not do sho.

Some designs, like some vertical splits rings from Warne and Aero Precision don’t benefit from lapping due to the way they clamp down.

Last edited by MarikinaMan; 05-10-2019 at 4:55 AM..
Reply With Quote
  #12  
Old 05-10-2019, 5:08 AM
desertrider's Avatar
desertrider desertrider is offline
Senior Member
 
Join Date: Jul 2007
Posts: 1,466
iTrader: 69 / 100%
Default

Quote:
Originally Posted by audiopro74 View Post
And logically, if it’s not compressed, you know you don’t have good contact. Which would require lapping.

Running matched rings, there’s varying opinion on whether they need to be lapped. This could be used as an indicator.

And yes I know, lapping is always better. I’ve got plastigage in the tool box, but not a scope lapping tool.
I agree with you on the above point, especially if you have a matched set from a reputable manufacturer.

Not being a professional on this subject, I believe that if you paid good money for a set of matched rings and find that there is uneven pressure being applied to your scope tube, it is most likely a result of tolerance stacking where something else just isn't fitting together right.

So if you choose to lap the rings to accommodate the inconsistency of the poorly fitted parts, you no longer have a matched set of rings. You've just modified them to fit the combination of tolerance inconsistencies in your build.

Like I wrote in my first reply, sometimes lapping may be the best option for some situations though. For instance, what if the problem is with the receiver? The cost to have a 'smith strip your gun down to just the receiver and match the surfaces would be a heck of a lot more than the cost of a lapping bar for your rings. That's for damn sure.

If that were the case, I'd spend the coin and get a good lapping kit. Personally, I'd buy the Kokopelli Accurizing Kit and be done with it. http://www.kokopelliproducts.com/acckit.htm
Reply With Quote
  #13  
Old 05-10-2019, 5:13 AM
desertrider's Avatar
desertrider desertrider is offline
Senior Member
 
Join Date: Jul 2007
Posts: 1,466
iTrader: 69 / 100%
Default

Quote:
Originally Posted by MarikinaMan View Post
I’m in West LA. I’ve got the Wheeler tool kit.

75 bucks cash deposit, get 65 back on return. Shipped at your cost. Pick up ok.

I’ve lapped a few rings. All of them showed high and low spots. Some more than others. You clamp down on imperfectly mounted or made rings, never seen perfect ones, you run the risk of torquing the scope tube. What happens when it’s torqued? Tracking can be affected. “can” not do sho.

Some designs, like some vertical splits rings from Warne and Aero Precision don’t benefit from lapping due to the way they clamp down.
I was typing my reply when Markina Man replied.

For only ten bucks plus shipping, that might be your best bet audiopro.
Reply With Quote
  #14  
Old 05-10-2019, 5:40 AM
smoothy8500's Avatar
smoothy8500 smoothy8500 is offline
Veteran Member
 
Join Date: Sep 2009
Location: Orange County, CA
Posts: 3,682
iTrader: 26 / 100%
Default

If planning to use shims, Plastigage would make sense in determining the "gap" when installing the one-piece rail on the receiver. Bedding the rail with some sort of epoxy is easier though.
Reply With Quote
  #15  
Old 05-10-2019, 7:20 AM
Spyder's Avatar
Spyder Spyder is offline
Honorary MLC
CGN Contributor
 
Join Date: Mar 2008
Location: In a shack, in the woods
Posts: 16,068
iTrader: 126 / 100%
Default

If they’re “high end matched rings”, don’t lap them.
Reply With Quote
  #16  
Old 05-10-2019, 7:26 AM
Spyder's Avatar
Spyder Spyder is offline
Honorary MLC
CGN Contributor
 
Join Date: Mar 2008
Location: In a shack, in the woods
Posts: 16,068
iTrader: 126 / 100%
Default

Dykem would be a much better plan than plastigage. Or a sharpie.
Reply With Quote
  #17  
Old 05-10-2019, 9:10 AM
sigstroker sigstroker is offline
I need a LIFE!!
 
Join Date: Jan 2009
Location: not in CA
Posts: 17,328
iTrader: 8 / 100%
Default

Yeah, plastigage needs to be compressed. Installing one screw on a rail probably wouldn't compress it enough to tell you anything.

Plastigage is an automotive tool designed to be a cheap way to tell you if you have enough clearance in bearings. All of this scope mounting discussion concerns things that should have no clearance at all.
Reply With Quote
  #18  
Old 05-10-2019, 9:45 AM
smoothy8500's Avatar
smoothy8500 smoothy8500 is offline
Veteran Member
 
Join Date: Sep 2009
Location: Orange County, CA
Posts: 3,682
iTrader: 26 / 100%
Default

In doing a fair bit of research, it appears that placing rings too close to the turret body and over-torquing the rings creates greater issues that lapping can't fix. Squeezing the tube close to the turrets causes binding of the erector assembly or parallax adjustment.

Lapping rings may not improve fit, but it can't hurt. But, if the scope is not correctly mounted, lapping didn't help a bit.

Last edited by smoothy8500; 05-10-2019 at 9:49 AM..
Reply With Quote
  #19  
Old 05-10-2019, 10:14 AM
Ramsh00ter's Avatar
Ramsh00ter Ramsh00ter is offline
Member
CGN Contributor
 
Join Date: Oct 2018
Location: Long Beach, CA
Posts: 147
iTrader: 1 / 100%
Default

I lap all steel rings! Does it do any good, I don't know. But it eliminates the possibility. Shooting to me has a certain about of head games to it, so eliminating every variable I can just helps my head.

Got into a debate with a Leupold tech about lapping rings when I asked if they could supply a 34mm lapping bar. They tried to tell me their rings were near perfect and did not need lapping..... Really....

After having a 34mm bar ground from an old rail gun barrel, I lapped the 34mm Leupold rings, they were not round and had high spots.

I have lapping bars for 1" 30mm, & 34mm.

Pay the shipping and promise to return it, you can borrow it.

The 1" and 30mm were cheap to make, just order the bar stock from McMaster Carr and a handle. The 34mm was a different story, had to have one ground.

Drill a hole, tap, screw in the handle and you are ready to go.

I lap with four different compounds, 300 grit, 600 grit, 1200 grit, and Ultra Bright Tooth paste.

I can post a picture of what I made when I get home if you would like, they are easy.

PM me if you want to borrow mine.
__________________
"It is better to go Hunting and think about God, than to go to church and think about Hunting"

"God grant me the serenity to accept the things I cannot shoot. The courage to shoot the things I can and the wisdom to dope the wind and make the shot."[/I]
Reply With Quote
  #20  
Old 05-10-2019, 1:44 PM
NiMiK NiMiK is offline
Senior Member
 
Join Date: Jun 2011
Posts: 501
iTrader: 27 / 100%
Default

Quote:
Originally Posted by smoothy8500 View Post
If planning to use shims, Plastigage would make sense in determining the "gap" when installing the one-piece rail on the receiver. Bedding the rail with some sort of epoxy is easier though.
I agree with epoxy method. Lapping the rings is one thing but will the base make full contact on the receiver? That was one of my concerns before I decided to bed the scope base on my rifles.
Reply With Quote
  #21  
Old 05-10-2019, 3:24 PM
Spyder's Avatar
Spyder Spyder is offline
Honorary MLC
CGN Contributor
 
Join Date: Mar 2008
Location: In a shack, in the woods
Posts: 16,068
iTrader: 126 / 100%
Default

Quote:
Originally Posted by smoothy8500 View Post
Lapping rings may not improve fit, but it can't hurt.
It most definitely can.
Reply With Quote
  #22  
Old 05-10-2019, 6:01 PM
hambam105 hambam105 is offline
Calguns Addict
 
Join Date: Jan 2013
Posts: 7,071
iTrader: 2 / 100%
Default

I'd say the professionals know the purpose and ability to use a scope lap ring tool properly.
Therefore, my vote is to deploy a used HB electric grinder with a wheel no smaller than 8 or 9 inchs under low light conditions.

Last edited by hambam105; 05-12-2019 at 3:25 PM..
Reply With Quote
  #23  
Old 05-10-2019, 6:46 PM
shafferds shafferds is offline
Senior Member
 
Join Date: Feb 2008
Posts: 1,971
iTrader: 70 / 100%
Default

Odds are you will do more damage than good. Put it together first with proper torque of screws and scope placement.
Reply With Quote
  #24  
Old 05-10-2019, 7:17 PM
jtv3062's Avatar
jtv3062 jtv3062 is offline
Veteran Member
 
Join Date: Oct 2005
Posts: 2,665
iTrader: 0 / 0%
Default

Quote:
Originally Posted by audiopro74 View Post
One piece steel rail, only has a super thin sheet of paper gap on the front. Rings are high end matched, matched rings. Not sure they need lapping, just trying to give this rifle every chance to bang steel at 1000. It’s my first foray into the long range game, and I don’t wanna it any corners.
You paid big bucks for rings and then your going to ruin them? Bed the base and be done with it, that is if you bought quality base.
__________________
Do not fear the enemy, for your enemy can only take your life. It is far better that you fear the media, for they will steal your Honour
Let's pray for Obama Psalm 109:8






159
Reply With Quote
  #25  
Old 05-12-2019, 6:23 AM
Preston-CLB's Avatar
Preston-CLB Preston-CLB is offline
Mountain Picker
CGN Contributor
 
Join Date: Apr 2018
Location: Tuolumne County
Posts: 2,169
iTrader: 0 / 0%
Default

Please forgive my ignorance, but I have two questions:

1. What is 'Scope Lapping'?
2. Why is it done?

Thanks, gents,
-p
__________________
"If you want nice fresh oats, you have to pay a fair price. If you are satisfied with oats that have already been through the horse, well, that comes a little cheaper."
Reply With Quote
  #26  
Old 05-12-2019, 6:35 AM
mtenenhaus mtenenhaus is offline
Veteran Member
 
Join Date: Jul 2007
Posts: 3,416
iTrader: 23 / 100%
Default

here's an example of one of the commercially available kits to lap riflescope rings.
https://www.brownells.com/gunsmith-t...rod126532.aspx

Basically it helps you both to align the rings so there's no undo pressure on the scope body...and it makes sure that the contact surfaces of the inner aspects of the rings are near perfectly inline and in contact with the scope body. In effect improving upon any mismatch or machining irregularities in the rifle mounting relationship.

Hope that helps.
Reply With Quote
  #27  
Old 05-12-2019, 8:49 AM
LynnJr LynnJr is offline
Calguns Addict
 
Join Date: Jan 2013
Posts: 7,911
iTrader: 8 / 100%
Default

Quote:
Originally Posted by Preston-CLB View Post
Please forgive my ignorance, but I have two questions:

1. What is 'Scope Lapping'?
2. Why is it done?

Thanks, gents,
-p
It's a process that is supposed to allow for 100% contact between the scope rings and the scope tube.
It is done because the scope tube and the scope rings are machined parts and have tolerances.
__________________
Lynn Dragoman, Jr.
Southwest Regional Director
Unlimited Range Shooters Association (URSA)
www.unlimitedrange.org
Not a commercial business.
URSA - Competition starts at 2000 yards!
Reply With Quote
  #28  
Old 05-12-2019, 11:15 AM
Preston-CLB's Avatar
Preston-CLB Preston-CLB is offline
Mountain Picker
CGN Contributor
 
Join Date: Apr 2018
Location: Tuolumne County
Posts: 2,169
iTrader: 0 / 0%
Default

Thanks for explanation, gents!
-P
__________________
"If you want nice fresh oats, you have to pay a fair price. If you are satisfied with oats that have already been through the horse, well, that comes a little cheaper."
Reply With Quote
  #29  
Old 05-12-2019, 3:30 PM
hambam105 hambam105 is offline
Calguns Addict
 
Join Date: Jan 2013
Posts: 7,071
iTrader: 2 / 100%
Default

Who needs 100% scope body to scope rings contact, and who needs precision machined parts when 'Good-Enough' will do?
Reply With Quote
  #30  
Old 05-12-2019, 3:48 PM
ar15barrels's Avatar
ar15barrels ar15barrels is offline
I need a LIFE!!
 
Join Date: Jan 2006
Location: Van Nuys
Posts: 56,410
iTrader: 119 / 100%
Default

Quote:
Originally Posted by desertrider View Post
I'm not going to knock lapping rings as a waste of time and effort, because there are situations when it may be the best option, but have you already eliminated all other variables causing the misalignment you're experiencing?

Do all mounting screw holes in the receiver align properly?

Are you using a one piece scope base or two piece?

If you're using a one piece scope rail, does it sit flush with no gaps?

Are you using name brand rings? (Beware of cheap, poorly machined rings)

Remember, you are combining several different systems, probably all manufactured in different facilities on different machines. All provide an opportunity for different tolerances between each other.

There's a good chance that if you eliminate all tolerance inconsistencies between the mating parts it may not be necessary to lap your rings.
The main reason to need tp lap rings is that the scope base does not fit correctly and the person has chosen to tighten it down to the reciever and twist the base instead of bedding the base to the reciever.
If you bed the base to the reciever so that the base is not twisted AND you use good quality rings, the scope will set in the rings and slide like it's on air bearings because everything is in alignment.
When the base is twisted or the rings are NOT square, then the scope tube binds and lapping will cut out the misalignment.

People don't realize that if you put the rings on different slots on the base after lapping that the rings are no longer straight to each other if the base is warped by being force fitted to the reciever.
This is not the case on a straight bedded base though.
You can move the rings and maintain alignment when the base is straight.

Lapping should be the last ditch effort to fix misalignment.
The FAR better method is to bed the base.
__________________
Randall Rausch

AR work: www.ar15barrels.com
Bolt actions: www.700barrels.com
Foreign Semi Autos: www.akbarrels.com
Barrel, sight and trigger work on most pistols and shotguns.
Most work performed while-you-wait, evening and saturday appointments available.
Reply With Quote
  #31  
Old 05-12-2019, 3:49 PM
ar15barrels's Avatar
ar15barrels ar15barrels is offline
I need a LIFE!!
 
Join Date: Jan 2006
Location: Van Nuys
Posts: 56,410
iTrader: 119 / 100%
Default

Quote:
Originally Posted by sigstroker View Post
The plastigage thing is for bearings, which are supposed to have a certain clearance. Scope rings aren't supposed to have any clearance.
Plastigauge will show angular misalignment very well though.
__________________
Randall Rausch

AR work: www.ar15barrels.com
Bolt actions: www.700barrels.com
Foreign Semi Autos: www.akbarrels.com
Barrel, sight and trigger work on most pistols and shotguns.
Most work performed while-you-wait, evening and saturday appointments available.
Reply With Quote
  #32  
Old 05-12-2019, 3:51 PM
ar15barrels's Avatar
ar15barrels ar15barrels is offline
I need a LIFE!!
 
Join Date: Jan 2006
Location: Van Nuys
Posts: 56,410
iTrader: 119 / 100%
Default

Quote:
Originally Posted by sigstroker View Post
Did you read somewhere this was a good idea? The point of lapping is to have even contact along the whole surface of the ring. The plastigage won't tell you anything about that because if there are high spots, you won't be able to tell. Those high spots won't compress.
I take it you have not used plastigauge.
It will absolutely tell you if you have misalignment.
__________________
Randall Rausch

AR work: www.ar15barrels.com
Bolt actions: www.700barrels.com
Foreign Semi Autos: www.akbarrels.com
Barrel, sight and trigger work on most pistols and shotguns.
Most work performed while-you-wait, evening and saturday appointments available.
Reply With Quote
  #33  
Old 05-12-2019, 3:52 PM
ar15barrels's Avatar
ar15barrels ar15barrels is offline
I need a LIFE!!
 
Join Date: Jan 2006
Location: Van Nuys
Posts: 56,410
iTrader: 119 / 100%
Default

Quote:
Originally Posted by desertrider View Post
If the flattened plastigage isn't uniform in it's spread I'd attribute that to imperfections in the machining of the rings.
29 times out of 30, the problem is the base being twisted on the reciever, not the ring machining.
__________________
Randall Rausch

AR work: www.ar15barrels.com
Bolt actions: www.700barrels.com
Foreign Semi Autos: www.akbarrels.com
Barrel, sight and trigger work on most pistols and shotguns.
Most work performed while-you-wait, evening and saturday appointments available.
Reply With Quote
  #34  
Old 05-12-2019, 3:58 PM
ar15barrels's Avatar
ar15barrels ar15barrels is offline
I need a LIFE!!
 
Join Date: Jan 2006
Location: Van Nuys
Posts: 56,410
iTrader: 119 / 100%
Default

Quote:
Originally Posted by Preston-CLB View Post
1. What is 'Scope Lapping'?
2. Why is it done?
The use of a mandrel and abrasive (lapping) compound to correct misalignment within the rings to eliminate angular misalignment stress on the scope tube.

It's a "hack" fix for parts that don't fit correctly to begin with.
__________________
Randall Rausch

AR work: www.ar15barrels.com
Bolt actions: www.700barrels.com
Foreign Semi Autos: www.akbarrels.com
Barrel, sight and trigger work on most pistols and shotguns.
Most work performed while-you-wait, evening and saturday appointments available.
Reply With Quote
  #35  
Old 05-14-2019, 12:51 PM
LWP LWP is offline
Member
 
Join Date: Aug 2016
Location: Lakewood Ca
Posts: 172
iTrader: 0 / 0%
Default

Quote:
Originally Posted by Ramsh00ter View Post
I lap all steel rings! Does it do any good, I don't know. But it eliminates the possibility. Shooting to me has a certain about of head games to it, so eliminating every variable I can just helps my head.

Got into a debate with a Leupold tech about lapping rings when I asked if they could supply a 34mm lapping bar. They tried to tell me their rings were near perfect and did not need lapping..... Really....

After having a 34mm bar ground from an old rail gun barrel, I lapped the 34mm Leupold rings, they were not round and had high spots.

I have lapping bars for 1" 30mm, & 34mm.

Pay the shipping and promise to return it, you can borrow it.

The 1" and 30mm were cheap to make, just order the bar stock from McMaster Carr and a handle. The 34mm was a different story, had to have one ground.

Drill a hole, tap, screw in the handle and you are ready to go.

I lap with four different compounds, 300 grit, 600 grit, 1200 grit, and Ultra Bright Tooth paste.

I can post a picture of what I made when I get home if you would like, they are easy.

PM me if you want to borrow mine.
I agree with you, if you have the tool and are able to do it, which is very simple, why not. It only makes sense, especially after you start lapping for a few minuets and confirm from the results where the high and low points inside the rings are. And if there aren't any you'll know quickly and can stop. No harm no foul.

Last edited by LWP; 05-14-2019 at 12:54 PM..
Reply With Quote
  #36  
Old 05-14-2019, 9:55 PM
boyguan boyguan is offline
Senior Member
 
Join Date: Aug 2016
Posts: 745
iTrader: 17 / 100%
Default

Hitting steel at 1000 was easier than I thought. All this work isn’t needed if your goal is a24x24 at 1000
Reply With Quote
  #37  
Old 05-15-2019, 8:11 AM
Mute's Avatar
Mute Mute is offline
Calguns Addict
 
Join Date: Oct 2005
Location: Diamond Bar
Posts: 8,089
iTrader: 40 / 100%
Default

If it ain't broke, don't fix it. Shoot your set up first and see if it actually performs as needed.
__________________
NRA Benefactor Life Member
NRA Certified Pistol, Rifle & Refuse To Be A Victim Instructor

American Marksman Training Group
Visit our American Marksman Facebook Page
Diamond Bar CCW Facebook Page


NRA Memberships at Discounted fee
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT -8. The time now is 2:55 AM.




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Proudly hosted by GeoVario the Premier 2A host.
Calguns.net, the 'Calguns' name and all associated variants and logos are ® Trademark and © Copyright 2002-2021, Calguns.net an Incorporated Company All Rights Reserved.
All opinions, statements and remarks made by Calguns.net on this web site and elsewhere are solely attributable to Calguns.net.



Seams2SewBySusy