I have used a TC Hawkins since 1975. All I have ever used for cleaning the BORE is HOT water. Pull the nipple, set the breech into a bucket of as HOT of water as your tap will dispense. Using either a cleaning jag on your ramrod or a cleaning rod, wrap a piece of wet cloth around it 'till it is tight to the bore, tight enough to cause a pumping action to suck water into and out of the breech hole. Run the rod up and down in the bore from one end to the other. This sucks in new hot water and flushes it out with each pump. Keep doing this until the barrel gets HOT to the touch. Pull the barrel out of the water and pump the rod to "flush" the water from the bore. Replace the cleaning patch with another dry one that is bore size and run it up and down the bore to dry the water. Replace the damp rag with a dry one, put a little of your favorite gun oil on it (mine was usually Hoppes) and run it up and down bore several times to oil it from rust. The key being to get your barrel HOT to the touch. After wiping out the collected water the heat of the barrel will dry it internally, then your oily patch will coat it from rusting. Wipe down the outside of the bbl. and the lock with your oily rag and you are good to go. So far that has worked for me since I got my rifle for the "Bicentennial"....darn that sound old! (I guess it is) LOL