My Bison likes 80 grains of Triple Seven 2f for some reason. It really puts them down range with that. But my .451 Model 97 loves Pyrodex P or Swiss 3f. When I load those powders, that has to be one of the most accurate scoped rifles I have.
I started shooting Swiss 3f because Batchief suggested it. He was right on the money with that advise. First five shots at 50 yards and a half dollar would have more then covered the holes. But I was only shooting 65 grains of powder.
I really want to see what kind of trajectory you discover. I sight mine in for 50 yards because of where I hunt. So this is going to be an interesting post.