I've shot a lot of heavies in my Ruger PCC without problem. Of course my main heavy has a profile that allows one to seat it quite far out in the case. I had to have my Canik TP9SFX throated so I could load the bullets out longer. There was almost no throat and the rifling started with a 90° angle, it was leading with everything. Now that it's been throated I can load longer and it does't lead. The barrel slugged at .357 and it wouldn't chamber a .358 bullet till I had it worked on.