454/45LC?? Why bother.....If you re-load you can just load down the 454. The 45 LC is safe to shoot, but as stated above it may score the chamber, maybe not. Why take the chance. If you dont re-load, I'm sure you can buy Cowboy Action loads to play with. I know that my Puma 92 has a lot of recoil with my 454 reloads, but they do sell one in 45LC only.