My S&W 645 has never expereinced any feeding problems even with 185 gr. LSWC's. I also use a S&W 945PC for bullseye psitol and steel plate matches and have recently purchased a full size M&P45.

I have been very favorably impressed with the M&P45. Feeds everything from 185 gr. LSWC;s through various weights of JHP's anf the 230 gr. FMJ without a hiccup. Mine shoots nice tight 10 shot groups at 50 ft. which measure 1 1/4 to 2 inches with chronic regularity. I only wish it had a less gritty factory trigger, more like the S&W 645.