Found that. Reason I ask is seems like guys are running them no problem. I just measured my threads and looks like they are around .48-.49” long. Which creates another problem for possibly using a .2” spacer and then being the other way.Thunderbeast recommends muzzle to shoulder length of 0.400".
Maybe it’s worth getting .1” chopped off the end. I don’t know maybe @TBACRAY can tell us the space to the first baffle. I know the spec, unfortunately if I don’t have to take my rifle to a smith halfway across the state I’d like to avoid it.