You got it right Pat. I put crisco or something like that in the cylinder holes when I'm going to shoot outdoors. It prevents chainfire as well as acts as a moisture seal. Don't use very much cause it can contribute to fouling. Loose caps can cause a chainfire I suppose. I've never had that happen. Making sure that the nipples are tight is important as well. Heck, it's like anything else, you have to check everything and even then I usually do it again. I love shooting BP. The smoke, sound, smell...even cleaning is ok with me. I imagine that folks that shoot these things regularly are in many ways more familiar with the innards and outards as well as the peculiarities of their particular piece than many folks who only shoot the tupperware stuff. It's just great sport.