22 ammo
Just got my M&P 22 two days ago, disappointed at first, initial 400 rounds of American Eagle HP had consistent FTE after first shot. Took it home, field stripped and cleaned thoroughly. Found that guide rod bushing was backwards and spring was not seating in recess. Reassembled, took back and it performed almost perfectly, only 2 remington goldens did not fire, reloaded and they fired. the ammo had strike marks on rim, maybe their age had something to do with the misfires. Remington ammo was 10+years old, but shot very well. I am now happy and very satisfied with this gun. Looking forward to lots of fun with this pistol. Purchased at Cabela's on sale for 349.99, best price around here. I also own Ruger single six convertible and Browning Buckmark, S&W just as much fun as those. Still experimenting with ammo, but if gun can handle bulk ammo this well, I'm happy! Nice job S&W!