My 5” m and p 40 runs a 200 NOE WFN at dang near 1100 with longshot. Not much difference, cases do not bulge, primer pockets are still snug after several shots. Seven five gallon buckets of brass makes my desire to pick up empties very slim. Seems to me that multiple rapid hits are very effective as is one hit from a big gun like one of my fifties.
The m and p sure packs easier than the smith 500 or my two 500 L single actions
A big plus is that the m&p40 has excellent casehead support.
