Josh. Cut a v-notch in the front of the hammer, all the way to the bottom of the shroud, or skirt, so that the front part of the cap is blow open when the gun fires. That will allow the cap to fall out of the shroud or skirt when you cock the hammer back to half cock for reloading. If a cap happens to get stuck, the deep notch allows you to take a knife, or nipple pick( wire) and get it under the cap, and pop it out quickly. I found with my Percussion rifle that If I made sure that the face of the hammer was clean, and smooth, the caps did not catch up there, and stay. I also found that the notch usually caused the cap skirt to fail, and tear open, so that a jagged edge was outside the hammer skirt, and made it easy to sweep the cap out of the skirt if it did stick. Once I ground that hammer face smoothe, using a Dremel tool, and grinding bit, I didn't have any more trouble with caps sticking. On my double barrel shotgun, the hammers already had the notches cut into the forward edges. All I had to do was polish the faces of the hammers, which I did as I made sure that they hit the nipple square to the nipple's top, and I have not had any problem with stuck nipples. Occasionally a piece of the cap gets blow off, and you have to deal with flying shrapnel, but at most it might sting your forearm. I have never had any of it imbed in my skin. Usually, because the notch is over the barrel, any shrapnel hits the barrel and bounces off in some other direction away from the face above and behind, and the forearm below. I really don't worry about it at all.
