321 GNR - Bought a 17" Carbine Barrel on a Saturday Sale...
A few weeks back. Got Gary to thread the muzzle for a brake I've been experimenting with. Reduces recoil well and vents out the front. Not that the 321 GNR will recoil any amount anyways, but this should bring it to near zero.
The brake does not direct sound back towards the shooter and for hunting, that's something I like.
I've has almost magical performance from this size cartridge in carbine form using Lil Gun Powder. It hasn't topped H110 in pistol length, but add a few inches of barrel and look out.
Will be testing in my 12" and 17" G2 Barrels. Will post results here.