I'd agree that light loads will probably be acceptably accurate and a whole lot cheeper for practice shooting with a fast twist barrel but if you're going hunting anything bigger than a javalena stick with bullets; probably sabots. That said, the "acceptably accurate" more than likely won't be great. OK for plinking at stumps, cands & jack rabbits though.
Well I have an old renegade from the early 80's I shoot alot of round balls out of.It is a 1 in 48 twist.And my Omega is a 1 in 28 twist. I am not very accurate with the Omega and the round balls,but my renegade is with 80 grains of pyro.So I use it on varmits and target with ball loads.
Anyone who shoots a sabot bullet has had the problem with loading the next round with a dirty barrel we have all struggled with it.
Between muzzleloader shots I have done some research and testing on my own to find out what works for me for the next shot. I have been using a product called bore butter and when the muzzleloader is just sitting around I leave it caked in the barrel for protection. Have also found that if I lube my sabots with bore butter they really slide nicely down the barrel....