So, I'm really interested in putting together a rifle in this cartridge but need some help with parts - barrels to be more specific. I want to go 16", as it seems ideal for this cartridge. I won't suppress it, so I don't need to shoot subsonic ammo. I noticed AAC is going to a 1:7 twist, but I was looking at barrels from Black Hole Weaponry, and they use a 1:8.5 or 1:11. I know the 1:7 is to stabilize 220 gr. at subsonic speeds, but as I said I won't be shooting those. So, would the 1:8.5 twist work fine, or even the 1:11? BTW, I want to stick with a carbine gas system to be sure cycling is not a problem. So 300 Blackout experts, give me you thoughts.