ewlyon
Member
Pretty neat. I built one similar to yours with the DRD takedwon upper so I can change the barrel the 308 quickly but haven't gotten around to working up my 358 test loads yet.
I didn't really extrapolate anything. The crown swelling have been measured in a huge amount of barrels.
Are we talking about muzzle threads? Really?. . . this is the first I have ever seen it mentioned that 1/2-28 was insufficient for .223.