The breech plug that comes with your gun won'tbe the only one you ever buy, right? No matter howwell you clean it, the flash hole (I think that's the right name)will eventually burn out enough to need replacement, right? Do the primers that you use affect its life?Are the 209 primers that say "made for muzzleloaders" better thanones made for general reloading of shotshells, or do they just cost more for no reason? Regular Winchester primers costs $2.99 for 100, while the ones that say "made for muzzleloaders" cost 4.99 for 100. Well, even if the breech plugs last a really long time, I think I'd buy a spare. I got the bad habit of losing stuff I really need.