I took my Italian made single action,45colt, out to shoot last week. The rounds were too long to turn the cylinder,WTF? So I took it back to the store.The smart guy wasn't there,so I left it.(no gunsmith,just cowboy shooters that know these guns,I thought) Well it never got looked at and we tried some Hornady rounds that did work. Problem solved!..? Not so much So the moral is,the Hornady cases are at 1.227" and the rest of the cases I have are at 1.276 (ironically,what the hornady manual calls COL for the 45colt lol) So the question at hand is who can bore another .050 out of these? Used gun so not the factory. There is a guy in AZ doing it,but his back log was about 1 year. He tricks 'em out cool I guess,but his machine hasn't paid for itself after 5 years. Any suggestions? Buy a drill press?