Just to add my twopence worth. I forgot my lube one time a bit back so fired without. After 2 rounds of 6 shots the barrel was so crudded up that the balls where going all over the place to the point where it wasnt worth re-loading. Secondly it was the only time i have ever had lead fouling, mainly at the start of the barrel. You could actually see it by looking down the
barrel. Personaly i use water pump grease (its very high melting point) or wonderlube over my balls. Both work well with b/p and cleaning is a doddle with hot soapy water with washing up liquid. Wonderlube also smells like germaline, lovely. Tim.