I shoot North South Skirmish competition with Civil War muskets. Some guys use paper cartridges, but most use a pipe cap that a minie will just friction fit into. Powder goes into the tube, minie goes next, nose first, acting as a cork, base of minie then gets dip lubed. It's fast when you get used to it and I can get off 5+ shots per minute when really hurrying. But we have a saying, you can't miss fast enough to hit anything.