I have an extra AR upper and complete bolt/carrier assembly setting around. Was just wondering about going with the .300 Blackout sometime in the future.
My query is this, does the .300 Blackout give basically the same results as the 7.62x39 or even the 30/30 with cast loads? Was mainly interested in the 150-180gr weight of boolit, to be used for deer hunting with the AR. What twist rate of barrel for this weight of boolits?
I realize putting a .300 Blackout barrel on the AR upper would involve checking headspace, but any other concerns with barreling?