Unless you have tons of 45 colt components you can just buy some hs6 amd longshot and just load away in a 454 case. Nice 60% type loads and easy to do. Neither powder is very critical at all. It would save money over a new cylinder. I have 45 colt cylinders for 2 of my fa 83?s and i think ive used em once due to the ease of the 454 with the above mentioned powders.