There is one thing you might look into: The 200gr SW has a .269 BC which is the best I have found in a bullet for muzzle loading that was light enough the push up to a really decent velocity with a normal load it also has a better SD than any other bullet you can get that kind of velocity out of.
My Omega load for them is 150gr [3 pellets] pyrodex it will shoot under 1.5 inches and several times when the wind was still the light was just right and I was shooting good I have gotten 3/4 inch 1 hole groups. I have used them and the 40cal[10mm] on deer and boar and read where a couple had use them on moose so far every one has had excellant results and they are the only bullet that I have gotten to shoot good with max loads; they shoot very well with 100grs too but the group spreads out in between. with 150 grs they shoot close to 2300 FPS which is one of the reasons they shoot so flat. 3inches high at 100 and 4 inches low at 200, I do not believe there is a bullet sabot combo that is better if your gun will shoot them like both of mine do, I have to use 110gr of 777-FF in the Triumph it shoots 777 better than Pyrodex [ the only thing wrong with it. Lee