Personally I have never had to replace a Breechplug, I shoot but not as much as most do on here. Once My MLer is sighted in, it's good. I check it each season to be sure Im on and then I use it for it's purpose, to harvest game. Targets for me are for sighting in, Mlers for me are for harvesting game.
One can shoot all the targets they please but My Mler is ment to do one thing and only one thig.
If you wear out your BP than Buy another one and have fun, and more fun, simple as that. I get my thrill out of Hunting.
(BP)