I ordered a 209x50 Encore muzzleloader for a friend, and when he came to pick it up he started talking about what bullet he might use,sabots). He said he wanted to go with a lighter bullet..., and that's when I stopped him. I started thinking as a highpower shooter/reloader who understands,at least a little)about bullet weights, twist rates, bearing length, etc. I mentioned that the lighter bullets might not stabilize properly, and he would want to try a few different bullets. Then I started think a little more about the fact that a sabot is being used, and the bullet would not actually engage the rifling so the "bearing surface" might not be a factor. I began to wonder if bullet weight will really make that much difference in this case. I assume it will, at least to some degree, but would like some input from those with experience. TIA