When I shot bowling pins,, I used a M29 with 245 gr LSWC @ about 900 fps. in the revolver class. And a 230 gr TC @ about 800 fps in a 1911 for the auto class.

A M625 or maybe even a M610 also might be a pretty good choice for a revlover pin gun.. If you were wanting something other than a .41 or .44.