I have a Ruger MK III I bought it new and had issues with it extracting spent cases so I ordered a new after market extractor and it works perfectly now. It will shoot almost any ammo with no issues and is very accurate. The only issue this gun has as far as I am concerned is that it is a real bear to take apart and clean and put back togetther. I have ten .22 handguns and it is by far the hardest to take apart and put back together. Other then that it is a very nice handgun to shoot.
Graydog