It does sound ridiculous doesn't it? But to ignore the fact that the finest black powder guns in the world, from the great English makers came equipped with a metal bottle of whale oil, may tell us something. That armories full of military blackpowder arms were discovered, some years back (Nepal is one), with remarkably good bores, should tell us something. Lubricated bullets with all manner of natural lubes are believed to be responsible. So it's not just my half fast opinion, there is a lot of historical evidence to support it. Of course we can ignore history, with mixed results.
