What ammo?

[guzzinut]

I shoot a Rock River NM with a 1:8 twist. I shoot a LOT of the 62gr surplus ammo. It has proven to be quite accurate. I also have had great luck with the Prvi Partizan fodder...especially the 69 gr hp. Its reasonably priced and accurate.
I get my bulk orders from the following
AMMOMAN.com
Cheaper Than Dirt - America's Ultimate Shooting Sports Discounter

Classic Arms Inc.
Ammunitionstore.com - Ammunition for sale. Bulk ammo. Cheap ammo. Gun ammo.

you can get 450rnds for roughly $150

[Pak75]

Best for what? Plinking? Anti-zombie stash? Do you go to a range that doesn't allow steel core/penetrator ammo? If you want basic, 55gr FMJ loads, Georgia Arms sells theirs in 500 and 1000 packs in ammo cans. They go up and down the East Coast to various gun shows, so if you order 1000 and can meet them at a show near you, you can save on shipping.

Jim

GA Arms also sells it's bulk ammo in the .62gr variety. Look under "Canned Heat" in 5.56mm. Also I have fired Wolf military, Russian Silver Bear and Russian Brown bear ammo in my Colt 1/12 chrome barrel and have no extraction problems. All of them work in my RRA chrome barrel too. You should not have any problems other than it sometimes smells funny and is a bit dirtier. For bulk ammo pricing it's not going to be pristine rose scented match ammo. I've shot hundreds of rounds of the stuff mixed brass and steel cased in range sessions without cleaning. Clean the rifles after every range session and lube normally.