What powder are you using? Each powder is different and each gun shoots differently. Accuracy wise, you maybe able to shoot twenty shots before your accuracy suffers, you may be able to shoot one shot. I run a bore snake through my barrel after each shot and get the best accuracy that way. It kind of stinks, but that's what my gun likes. Cleanliness wise, even if you're shooting a "dirty" powder like pyrodex, you should still be able to shoot at least 20 times before NEEDING to clean your breech plug and barrel. But that's literally talking about just being able to shoot, that's not taking into account any kind of accuracy. Muzzleloaders are a ton of fun but can be finicky. Just take your time, take extra bullets and powder and have fun with it. Oh and a hot muzzy barrel almost always means accuracy issues. Give it time between shots.