Those New Stag Non Restricted AR10's: Question

Dirk72

Dirk72

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I have an M1A and love it. But that thing is an absolute beast on brass. I run four reloads and then pitch the empties in the trash - after I pound them flat. (I don't want any garbage pickers selling them to one of you guys by mistake).

Like everyone else I am watching those STAG AR10's like a hawk and I think one in 6.5 Creedmoor might be calling my name... but will the AR10 beat it's brass the way the M1A does? Anyone have any experience on case life with those?
 
Depends.

My one Ar10 mangles brass. By the time I get to third reload, the cases are scratched/gouged to $hit, somewhat gouged rims, and I can only imagine how thin the case is becoming above the web. However, that gun has a fairly loose 7.62nato chamber and the gun is overgassed (most AR10/Ar308 are)

I have another Ar10 with a custom barrel that has a .308 chamber, gassed perfectly, and it's much nicer to cases.

So yours could be anywhere in between.

Personally I got tired of reloading for my semis. I burn through the ammo too fast and it takes up too much of my time reloading for it, let alone acquiring/keeping track of brass for it. I just by factory for them now.

If you're going to reload, set your dies to only size the case just enough that it will chamber reliably, and an adjustable gas block might also help, maybe. ;)
 
My M1 garand used to damage the brass at the neck as well, so I put a adjustable gas plug and now there is zero damage and brass is not ejected into space.
Why not try a adjustable or ported plug on your m1a?
 
MiniMe said:
My M1 garand used to damage the brass at the neck as well, so I put a adjustable gas plug and now there is zero damage and brass is not ejected into space.
Why not try a adjustable or ported plug on your m1a?
Click to expand...
With the advent of adjustable gas blocks this problem should be fairly easy to rectify. Several years ago I bought an excellent condition FN-49 in 8mm. Took it to the range and the first few cases I fired the ejection was so violent that it actually ripped the case rims. Took it home, did some reading to try & figure out the problem and found out that unlike my later model FN-FALs the adjustable gas block was under the handguard and not readily visible. Took the handguard off, turned down the gas volume and the thing turned into a pussycat.
 
My experience has been the same as others here, with the AR10 once you have ejection tuned (gas, buffer, spring) you should only get slight scratching from the barrel extension if the lugs are sharp. I had to lightly take the edges off at 1-3 o'clock with some 600 grit wet paper.

Most of the damage comes when the heavy brass hits cement or steel on the way down. I'm using a catcher from Tactical Brass Recovery. This unit works slick
 
On the Stag, fuzzy-side velcro on the brass deflector seems to help with neck deformation, at least for me. After annealing and full length sizing neck down 4 thou, I run the brass through a sinclair neck expander die. I am getting standard deviations on 5-shot groups around 5.9 fps, so I don't think there are any issues with inconsistent neck tension.

By the way, my 6.5 CM Stag is a a little less than 1 MOA at 300 yards. Great value for money.
 
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