TripleSe7en - I have some Rusty Duck Black Powder Solvent that I keep in a 35mm film canister and I'll soak the breech plug in it if I'm shooting extended periods at the range. It loosens up the crud buildup in the flash channel and I use a rag, Q-tips, and blow thru it to dry it out. Actually my "alcohol" solution is a mixture of 3 parts isopropyl, 1 part ammonia, and 1 part vinegar. My step-son got this mix many years ago and I've used it for as long as I can remember.