When I shoot BlackHorn 209 its the first couple of shots that are out of the group. Once the rifle gets dirty, then it really starts to shoot better.

With the other powders, I swab between shots in my inlines, so consistency is kept and accuracy is not the issue 99% of the time. I am. In my Traditional rifles, shooting roundball, for some reason I find that I can shoot a number of times, even on a fouled bore, and maintain the same accuracy. Then its like all of a sudden, it starts to stray, and that means it either time to swab or quite for the day.