I was curious as to why muzzle loaders, like the 1853 Enfield, could not be cleaned in the barrel with CLP or Kroil? Kroil I believe is one of the best preservatives and penetrants I've ever come across. CLP does an excellent job at rust prevention. Right now I am using hot water, dish soap, and a bore squeege to draw soapy water into the breech end from the removed nipple, as the breech sits in a small tub of soapy water. I use a nylon bore brush and swab with patches when done and then coat it with my black powder bullet lubricant... smells like wintergreen (think Pepto Bismo). Looks like in the field shooting, a nice squirt of CPL or Kroil and patch would make further loading a bit easier and also help protect from pitting until thoroughly cleaned.