COBrad
Well-Known Member
Looking for a good bullet to reach the half-mile mark on Marmots this fall. The Matrix Ballistics bullet looks like my huckleberry. My rifle is a Cooper with a 10 twist barrel. Marshal, at Matrix, tells me this twist should work with this bullet, though a 9 twist is optional. Anyone have any experience with this bullet in this caliber? What kind of speed did you get?