I use Goex 3F for all my muzzleloaders and I shoot round ball with a spit patch. I can usually get about 25 shots before I will run a patch down the barrel and then I use a mixture of dish detergent and water.
The only time I shoot my MZ's off the bench at the range is when I am sighting my rifle in. Or when I am checking my zero.
I do my practice elsewhere.
When at the range I am only concerned on what my rifle does from a cold and clean bore. So I might be a bit different than other guys. But I completely clean the inside of my barrel between every shot. As I said I am only concerned where the cold clean shot hits. I really do not care where the rifle hits with a dirty bore. Or even a swabbed bore. But that is just me.
When I just shoot for practice. I spit patch then two dry patches between each shot. I can shoot pretty much all day, and as many shots as I want to. Sometimes it may take a second wet patch. Or a couple of extra dry patches. Tom.