Most bowling-pin shoots are divided into different classes for different guns (revolver, auto, "pin gin", back-up gun, shotgun, etc.), but the "classic" handgun for bowling-pin shooting is either a 1911 with heavy semi-wadcutters, or an N-frame S&W shooting the biggest wadcutter or hollowpoint you can find (and lots of practice with speedloaders). Bowling pins are tricky targets, so you want a set-up that puts as much weight into the pin as possible, even with an edge hit. As hard as hitting a bowling pin in the middle is, it gets a lot harder if you only tip that pin over, and it rolls around on the table while you're trying to get it off.