In my 30-30 Marlins, 10-11 gr of blue dot has been an accuracy standout with cast bullet loads. My challenge is that I almost always get a first shot flyer out the top. around 3-4" out of the group at 100 yards. I'm guessing it is related to powder position and the way I handle the rifle maybe? I think I have tried everything but still see this at least half the time. IMR Blue also shoots very well but does the same thing. Anyone else ever have this issue?