Another little trick if the rifle ever fails to ignite the powder charge and you have tried a couple caps.... Instead of getting out your ball puller and pulling the load, get out your nipple wrench first. Pick the nipple with a wire. Old guitar strings work great for this or you can buy a nipple pick. If it still fails to fire after the nipple is picked and you tried another cap, take the nipple off the rifle. Now drizzle in black powder/pyrodex./what ever into the nipple hole and put the nipple back on. Now cap it and it should fire. In fact I used to do this out on the hunting stand when I had been sitting there a while. I would pull the nipple and drop just a little powder in there and put the nipple back on the rifle and re-cap it. I figure this way I was sure the rifle would go off and it also gave a few minutes for the trophy buck to walk out in front of me and laugh as I was trying to get the gun back together....