Ok, so lets assume that the 45colt cases now adays are just as tough as the 454 cases,(And they prob are). To shoot them at peak performance and match or even get close to what the 454 can do I will still need to get a custom 5 shot cylinder made, and all the internal parts to deal with the 5 shot rotation, plus the new barrel. Reeder says the factory barrels are not rated to handle anything over 45k as they are to weak at the bottom rear of the barrel... Sami specs say the 454 cartridge is max cup at 65k, but Reeder told me today that they are closer to 72k. If im going to have a custom made cylinder done up to shoot the stronger 50k colt case loads then why would'nt I just get it done in the 454, then I could shoot both the high perform 454's and 45 colts right?...PS Thanks for the link to that article BCall, it was a good read.