The RMC Ox-Yoke Black Powder Charge & Load Speed Loader allows black powder users to preload by removing threaded end piece and inserting a round ball and patch. Screwing the end piece back in and load powder into the opposite end. To transfer the load to your muzzleloader, pour powder down the barrel, and push on end to start bullet into the barrel. Finish seating with your ramrod. Works with .490 and .495 round balls. FeaturesAllows for easy reloadingTakes up minimal spacePackable and resuseableNote: Does NOT work for sabotted bullets