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Posted: 4/15/2003 2:59:23 PM EDT
I have a relatively new Armalite DCM (about 1000 rds). It was broken in with 3 10-shot strings of the finest-grit Tubb final finish bullets and is cleaned about every 40 shots, and treated with Parsec 0.3 micron moly. I cannot make it group better than about 2 MOA. I am shooting

-- military brass sorted by year
-- WLR primers
-- 24.5gr Varget
-- Sierra 69 moly and nude; OAL 2.26"
-- Sierra 80 nude; OAL 2.45"

About 1 primer in 50 gets perforated, and there seems no relation between whether the bullet is molyed or copper when the primer malfunction occurs.

I admit to shortcomings as a benchrest shooter, but can generally get 1 MOA from my friends' custom and bushmaster DCM rifles.

Any suggestions as to technique or, particularly, as to loads?
Link Posted: 5/7/2003 12:19:52 PM EDT
I use Hornady 175gr moly-coated factory ammo. With that, I can put 5 rounds in 1 inch at 100yds. With a scope. The 155gr Hornady's also work well, which suprised me. I can't get close to that accuracy with any other brand.
Link Posted: 5/7/2003 3:21:38 PM EDT
Post this question in the General Forum under "reloading or "accurate AR" specifically. The members over there will steer you in the right direction.
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