I bought one of these neat little guns. It shoots the .45 Colt cartridge. I cast up some RCBS 255 SWCutters out of a soft alloy and pc'd them. Diameters run .455. It cuts a big ragged hole at 50 yards. Interesting to me it's got a left hand twist. All my other Handi's are right handed twist. I even got a thumbs up from my wife on this one.