[mountainlion]

I can take the 45 auto cylinder out of the Blackhawk and put in a 45 long colt which some say doesn't exist and shoot 45 Colt rounds.

[Gaffer]

Didn’t know you could do this. Are you talking both being Ruger frames or one Ruger and the swapout say being a S&W...

I have 22LR/22Mag cylinders for an EAA revolver, I’m guessing that’s the Ruger thing also.