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Barreling a receiver - thread lube?

This is a discussion on Barreling a receiver - thread lube? within the Gunsmithing forums, part of the M14 M1A Forum category; I'm about to barrel a M1A receiver. Is antiseize on the threads recommended? Yahoo...


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Old January 2nd, 2017, 06:30 PM   #1
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Barreling a receiver - thread lube?

I'm about to barrel a M1A receiver. Is antiseize on the threads recommended?

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Old January 2nd, 2017, 06:44 PM   #2
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I've always used Brownell's moly barrel assembly paste but many just use plain old copper anitsieze paste.You dont need much

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Old January 2nd, 2017, 08:07 PM   #3
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I've always used it. The aluminum looks to bright and easy to spot, you may want to try copper.

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Old January 2nd, 2017, 08:16 PM   #4
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My service book says to use EP#2. That's just red chassis grease.
Realize that anti seize has ground up metal, aluminum, copper or nickle in it & as such is an abrasive. Having said that I doubt we spin any barrel on & off enough for the abrasive to wear out the threads!

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Old January 3rd, 2017, 04:23 AM   #5
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I use this stuff regularly.


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Old January 3rd, 2017, 07:04 AM   #6
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I use this stuff regularly.

Looks like plumber's pipe dope.

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Old January 3rd, 2017, 08:16 AM   #7
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I've used plain old grease and anti-seize.

Doesn't have to be complicated. The whole point is to keep the barrel threads " lubed" so as to be able to remove the barrel years down the road

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Old January 3rd, 2017, 08:17 AM   #8
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Looks like plumber's pipe dope.
Brownell's barrel assembly paste. I have no idea of what is in it other than the label warning of petroleum oil and not to eat it.

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Old January 3rd, 2017, 08:36 AM   #9
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it's standard permatex antiseize compound.lil dab will do ya,and wipe when done.
buy it in bulk,or contract it to be put in those bottles,put you labels on it

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Old January 3rd, 2017, 03:59 PM   #10
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I use this with good results.
http://www.tsmoly.com/catalog/produc...products_id=86

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Old January 3rd, 2017, 04:07 PM   #11
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it's standard permatex antiseize compound.lil dab will do ya,and wipe when done.
buy it in bulk,or contract it to be put in those bottles,put you labels on it
A dab will do ya
If you use more than you need you'll wear it

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Old January 3rd, 2017, 04:12 PM   #12
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For any barrel that hand-times above 15˚, I use C5-A copper anti-seize. For any barrel that times from 10˚ to 15˚, I don't use anything. For any barrel that times under 10˚, I use red loc-tite.

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Old January 6th, 2017, 04:59 PM   #13
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OK, my barrel hand timed almost 30 deg. I used copper anti-seize. Good now but took some effort.

Finish reaming now.

Question: I tried to chamber a resized 308 case. The bolt almost closes, half way thru rotating into full battery. The same with GGG Nato ammo.

My PTG pull thru reamer on the other hand is way long, bolt is some 10 thou from staring to rotate.

Is the reamer off? Hitting the lands?

I would like a tight chamber? Get a match reamer?

Recommendations?

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Old January 6th, 2017, 05:26 PM   #14
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Here are some pictures:

IMG_1730.jpg

IMG_1732.jpg

First with a Nato round, the second with PTG reamer.

???

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Old January 6th, 2017, 06:09 PM   #15
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OK, my barrel hand timed almost 30 deg. I used copper anti-seize. Good now but took some effort.

Finish reaming now.

Question: I tried to chamber a resized 308 case. The bolt almost closes, half way thru rotating into full battery. The same with GGG Nato ammo.

My PTG pull thru reamer on the other hand is way long, bolt is some 10 thou from staring to rotate.

Is the reamer off? Hitting the lands?

I would like a tight chamber? Get a match reamer?

Recommendations?

Yahoo
You've already started with one reamer. Don't change to another. And match reamers aren't all that recommended for a semi auto either. Usually cause their tolerances are a bit tighter. There are some match reamers that have been designed for the m14 in mind, but you'll be fine with a regular.


Your pull through reamer should be set for 308 saami minimum.

Do not use a cartridge as a go gauge. Especially a once fired resized case. You're asking for trouble..

You need a set of headspace gauges to check GO and NO-GO. If you have a GO gauge you can use a couple of pieces of scotch tape on the back of it to add approx 4 thousandths, which would be a NO-GO gauge.



You need to check you PTG reamer literature or website to see if its set up to headspace your rifle. They usually are.

I usually headspace my rifles at about 1-2 thousanths longer than GO gauge. This ensures reliable feeding and operation.

If you want a small, super tight match chamber get a bolt gun that has a "chambering torque lever" called the bolt handle. Those you can cram a case in the chamber with your hands instead of relying on spring pressure and momentum.

Thanks from nf1e
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