5&7 bothered me the most. Actually it was not all that bad of a group, even with the climb. I was kind of hoping a BlackHorn shooter could tell me an easy fix. I finally have my rifle address down pat. It just works for me. But when I get a flier then, it bothers the devil out of me.
I have shot BlackMag when it first came out. I had very good luck with the powder. It was powerful, easy to clean, and seemed to go off just fine. I have not seen it around though for many years.
Chet I know you are not supposed to have to swab. But could it be as the barrel gets more foul, the pressure changes? I know you are not supposes to have to swab with this powder. But if it happens again, I am going to bring out some isopropyl alcohol and lightly mist a patch and swab with that, no dry patch, just to see what happens.