Re: getting started with .308 win
Here:
http://www.snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=323517#Post323517
AR10s don't have op rods or any of that nonsense to destroy so basically any standard .308Win loads will do. You probably have 1:10 twist tube which should stabilize any grain bullet.
Brass note military 7.62 headstamp brass is generally thicker and will require up to a 2gr download. It lasts a long time but is not reknowned for extreme accuracy. Commercial brass, whatever is cheapest would be my recommendation, Winchester tends to be a good price/quality value.
Bullets, match or longrange SMK175, Horn HPBT178, SMK Palma 155, Horn 155Amax, Nos CC175. Under 600-800yds 168s tend to do very well. Blasting ammo, whatever is cheap, FMJs usually. Hunting bullets, there's too many options you're on your own without more details.
Powder, Varget, RL15, and 2000MR have done well for me, TAC if volume not absolute precision is my goal.
Buy a manual or manuals read them start below max loads, work up.