Since others have mentioned about cleaning the barrel which doesn't help you at the range with the problem you are having. What I do to clean the barrels of my caplocks TC Renegades and Lyman GPRs . I use a 5 gallon bucket about half full with warm soapy water then plain water. Pull the barrel from the stock put the breech end into the bucket of soapy water with the nipple still in. I have a Range Rod I put my cleaning jag on, wet the cloth patch I am using to bilge clean the barrel with then push it to the bottom of the barrel and work it up and down in the barrel about 10 or so strokes. Even with the nipple in you will be surprised how much water is pulled in when you push back down. This will flat out clean your nipple. After you do the 10 or so strokes pull the nipple, then finish bilge cleaning your barrel. The turbulents this causes when bilge cleaning, will clean ANYTHING out of the flash channel and ANYTHING in the patented breech, as if being high pressured power washed. If you use a greasy type of lube (BoreButter or the like) the soap will help clean that out of the barrel just like cleaning greasy dishes. Then I rinse with clean water to rinse out any soap residue, probably don't have to, but I do. I swab the barrel dry, then turn the barrel upside down and use a can of compressed air using the red hose that comes with it, blow out where you screw the nipple in and the flash channel, this will also blow the patented breech dry, then re-swab the barrel with a dry patch to remove any moisture blown down the barrel. Also I blow out the nipple, it is stainless steel but it gets any moisture out of the threads. After drying the barrel thoroughly I put Barricade into where the nipple goes, use the compressed air to blow it through the flash channel into the patented breech and all the excess into the barrel. All you need is a very thin film of that stuff and using the compress air, that is all that is left. Then swab the barrel with Barricade, put the nipple back in, barrel back into the stock, then put the rifle on its muzzle with a paper towel under it for 2-3 days for the excess Barricade to drain out as others have mentioned. Cleaning it this way you don't need to try and push any kind of brush or pipe cleaner through the flash channel or remove a clean out screw to clean it. DANNY