Originally Posted by
Blackelk
For a 1 in 12 twist barrel I'd stop fighting the bullet craze and go straight for the 55gr bullets.
I'd probably look more toward 50-grain with a 1:12, but I've also used 55s.
JMO, but the "rules of thumb" to me have more utility in deciding what bullet weight or profile NOT to use for a particular use than they assist in telling me exactly which one be perfect. Beyond that, here's another topic that winds up being WAY overthought. Go shoot it. See how it does. Adjust (THE most underrated capability and advantage of being a reloader).