I can go back and forth. The .45 colt case is shorter and I have to clean the cylinder in order to get the .454 rounds to fit correctly with out having to use a hammer to get them in there. Joking about the hammer of coures. You use Unique with the Casull? I have never tried it. Any load info you might be able to pass out would be great. I understand if that's not your thing. I could sue you if it went wrong.