I purchased one of the MP 22 magnum pistols a couple of months ago. I have had good results during the break in with the CCI Maxi-Mag, and the Hornady V-Max. Fun to shoot and accurate. A S&W flamethrower with virtually no recoil.
Very reliable so far. Make sure you don't push the rounds back too far in the magazine, as the rims need to sort of be "staggered" so that the all come to the top properly for feeding.
Take a look through the owners manual too. Lots of valuable info there.
Carter
