So far from what I have read, the KRB7 will NOT shoot Blackhorn 209 in a dependable manner. You get a hang fire. It is because of the design of the breech plug from all I have read. I am sure Knight will address this issue in the future, but for now if you are determined to shoot that $30-50 dollar an bottle powder, then the KRB7 might not be the best rifle for you. The one rifle that they are having great results with the Blackhorn in is the T/C Triumph.