if your that tight use 10/40 engine oil lol, all its there for is to stop leaks and stop flash over. and before i get any smart replys back a lot of americans do it and they made the bloody things lol, personaly make bore butter but dont use it due to wads being a much better and cleaner idea and let you shoot for one hell of a lot longer, but you might not shoot it as much as me and might only want to let a few off so butter a nice idea