Just picked up a clean T/C .54 Renegade caplock. Looks good, shot it about 15 times. Shoots good. As I was cleaning it with a wet patch I noticed water bubbling up around the nipple threads. Nipple is tight, and looks great, as I had checked it before I shot. The flash channel hole under the nipple makes a right hand turn before it goes into the barrel. No signs of powder around the nipple from the barrel. I havent removed it yet, and I have a question. How much pressure is there at the nipple, and what would it take to blow it out. I am going to order a new breech anyway from the track.