At the event mentioned accuracy is not much of an issue. The majority of the participants have never shot a muzzleloader before. The targets are big clangers at no more than a hundred yards, and the favorite is the top 1/3 of an old oxygen cylinder that rings like a church bell, that is at fifty yards.
The point of this whole thing is, if you’re swabbing ever few shots because loading is getting hard, your doing something wrong. And, if you keep getting a build up of crud, at the breech, you have the wrong patch lube. I make a point of not using anything for patch lube that I don’t know what is in it. Or, for that matter how it will react to extreme heat and pressure.
Hungry Horse