Gents - posted this in the rifle forum, but then figured this might be a better spot for advice:
Planning to sight in a new to me Marlin 336 in 30-30 and finally managed to get a hold of some 150 grain TSX. ((I've also got 160 FTX and 170 Corelokts to play with.) I've read quite a bit about the differences between Ballard and micro-groove rifling... any reason the shallower, narrower grooves would be problematic with a mono bullet?
