Glad to see V. M. Starr brought up.
Before I read of his load development and patterning, I was one of those with all kinds of wads and cushions and such. It worked, mostly, but was a real PITA, especially in the field. What Starr came to as a load was to carry only THIN OVERSHOT CARDS.
The column was powder, 2 cards, shot, 1 card.
I was giddy with the simplicity of it, and eager to try it out. I did, and found he was right. He was mostly shooting cylinder borred SxS percussion double originals. I've applied it to my long-barreled flint fowling pieces as well, and find it performs well whether in pursuit of clay, feathers, or fur. I'm forever told it can't work, and there must be some reason to replicate modern shotshell load columns in blackpowder burning cylinder borred muzzleloaders.
I simply suggest you try it. Works for me as well as it did for Starr.