Black powder substitutes will cut your cleaning issues way down. Real "holy black" is insanely corrosive and needs to be cleaned off fairly soon after shooting with hot water if you're being very traditional (yeah, boiling, out of a tea kettle or the like).
The more I use real black powder, the more I appreciate just how terrible it is not. It's not like you can wait 'till next week to clean Pyrodex fouling off of your revolver without it rusting and it's just as easy to clean black powder fouling off a gun as it is to clean Pyrodex fouling off of it.
BP fouling literally rinses off of your gun, the water doesn't need to be boiling hot. I never use boiling water myself.