Kurz
Silver $$ Contributor
I like to start conservatively as much as everyone else but in this case, the AR10 platform is not an M1A platform where you have to be conscience of bending the OP Rod. We have a straight shot all the way to the muzzle except for a tiny little hole to bleed off some of the plasma to run the BCG. Yes you should have an adjustable gas block so you can tune the rifle to the load. Yes, all of the powder should burn in the first half of the barrel so you aren't wasting powder but optimizing the velocity available before the gas port.
I give you Accurate AR COMP. Relatively cool burning but with a fairly fast burn rate. Berger 180 gr. Elite Hunter which is a dual use bullet since it will help you get to 1,000 yards on paper or steel yet you can hunt comfortably out to about 700 yards (1,000 ft lbs) depending on your velocity. Your 20" barrel, although decidedly short in my opinion, is perfect for using a suppressor for both target shooting as well as hunting. My load doesn't go subsonic until about 1,250 yards.
I give you Accurate AR COMP. Relatively cool burning but with a fairly fast burn rate. Berger 180 gr. Elite Hunter which is a dual use bullet since it will help you get to 1,000 yards on paper or steel yet you can hunt comfortably out to about 700 yards (1,000 ft lbs) depending on your velocity. Your 20" barrel, although decidedly short in my opinion, is perfect for using a suppressor for both target shooting as well as hunting. My load doesn't go subsonic until about 1,250 yards.