I am not into it myself, but I was TOLD by a re-enactor that neither wads nor ramrods are allowed in muskets. You bite the cartridge paper open, dump the powder down the barrel, drop the cartridge paper, cap with the muzzle up, present, and fire immediately the barrel comes level. Smoke and bang are adequate for the purpose. A wad would have to be rammed down on the powder and they want no risk of somebody shooting a ramrod at the opposing force, as was known to happen in the day.
I think you would have to have a wad in a revolver, but there is no separate ramrod to launch. Breechloading carbines would likely do ok with a nitrated paper cartridge.