Thread: 6mm 1:7.5 twist barrel

Apparently 1:7.5 works best. As we know, button rifling can sometime be slightly out by about a quarter turn, so an eight twist could end up either 8.25 or 7.45 twist. Now if we can defiantly get a 8 twist then it will most lightly stabilized the 115gr pills but if it goes to the other extreme then it will most likely not be able to stabilized. Test has shown that the 115 gr pills shoots best with a 1:7.5 twist. Hence my head arch.