05-29-2015, 11:36 PM
P.S. I forgot one thing. IIRC, the main reason for increased MV with 6.8 handloads is the different chamber dimensions with SPC II vs the original SPC chamber.
Since the Grendel chamber design was optimized at the beginning, there is no room for improvement in that aspect, so gains from rifling alone may not be much.
Since the Grendel chamber design was optimized at the beginning, there is no room for improvement in that aspect, so gains from rifling alone may not be much.