Wise reloading teachers, please show me the way!
I'm at the end of my rope on loading sub-sonic 300 aac blackout for suppressed use in a bolt gun. I started with H110 but then switched to Red Dot. I've tried multiple loads and I can stabilize the bullet and get subsonic velocities. Mainly with 208 grain hornandy a-max's (although I've played with 220gr sierra match kings too).
I would be happy with anything less than 1 inch groups at 50 yards from a rest given the situation I plan on using these for. And I can't get these. I've tried every two tenths of a grain from 5.8 to 6.2 of red dot getting velocities between 930fps on the low end up to 1115fps on the high end. The most consistent load seemed to be to be 6.2gr but I can only get 1.2 inch groups at 50 yards off a bench.
So I'm starting to wonder if it is the rifle. It is a savage but it was rebarreled by the prior owner for the 300 blk out. I've figured out it is a 1:8 twist and the rifling looks to be traditional (not ratchet). I bought it used and don't have any other history.
So do I play with this more or start over and buy the ruger american ranch and start over?http://www.ruger.com/products/americanRifleRanch/specSheets/6968.html