I’d always wanted a Colt’s SAA barrel bored to .454” so I bought a new .38/.357 Colt’s barrel and sent it in for a custom rebore job. After a long wait the barrel has returned with nice sharp rifling. The custom bored barrel measurements are .451”-.447”. A Colt’s measurements are .452”-.445”. The front sight will have to have the height increased, and the side of the barrel should be remarked from .357 to .45. The rebored barrel has what looks like tool marks in the bore, the Colt’s barrels are nice and shiny. I’m believing this project will end under the waste of time and waste of money category.