These guys are speaking the truth, I tried it both ways, lubebd and unlubed. Unlubed is the way to go for accuracy.

I hate to "advertise" for another bulletin board, but there is a guy over on the muzzleloading forum at RealTree.com that has an extensive knowledge of blackpowder do's and don'ts. According to him, there is something about the color of the plastic that corresponds to the bore diameter of a gun. I can't remember exactly, but you can check it out if you want to.

Those who wish to appear wise among fools, among the wise seem foolish.
Marcus Fabius Quintilianus (35 AD - 100 AD)