Thanks, T-Bill, for posting that info...I just recently dug-out my T/C New Englander .54 (very similar to your Renegade, PBK) and started thinking about muzzleloader season in December.
As I remember, it liked shooting T/C Maxi-Balls at the lower-end of the recommended loads - 80 or 90 grains of pyrodex.
As for cleaning....use HOT HOT water with a little bit of dish soap-take the barrel off, remove the nipple, stick the back-end of the barrel in a bucket or pan with the hot water and use a wet patch on the jag to suck-the water into the barrel; then push it back down into the pan/bucket. Do that several times with several patches to eliminate all of the blackpowder soot - then empty the barrel of all the water, let the water evaporate, and clean the barrel again 'normally' (no water) and finally, run an oily patch down the barrel to form a film.
You're using HOT HOT water so it will evaporate quickly and not rust the barrel. I used to add almost-boiling water to hot tap water, and then hold the barrel with an oven mitt while sucking the water in and out.
Then, I'd wipe the hammer/lock down with a hot/water-wet patch, then an oily patch. Same with the metal that holds the barrel in, and the nipple. Then re-assemble and store it for the next time!