I have a .50 cal version and the factory nipple has eaten everything I’ve fed it. I don’t see a need to replace it. I’ve read they don’t last as long. Mine has been shot a good 200 shots or so, and likely a handful more and it’s still doing fine, though I mostly shot patched ball. I’m fond of the Rem #10’s as they work on both revolvers and are easy to get. I’ve yet to try standard CCI #11’s, which is what my ToTW nipples claim to fit, as I can’t find the non magnum versions in a single tin to try. But then I read the CCI’s tend to break apart.