The Knight SBT Bullet looks just like the Barnes Expander 250 grains that I shoot out of my Knight Wolverine II. They are a great shooting bullet. I shoot them with 85 grains of Goex 3f. I have never really tried to push them harder. At 100 yards they will shoot 1-1.5 groups. I have not tried them at longer ranges then that. After I took the scope off the Wolverine and put a RED DOT on it, it will still shoot exceptional groups with them. If you want to try them, start them at 80 grains of powder and push them 5 grains at a time up, until the groups fall apart. If you want to shoot 150 yards, then sight your rifle in 1.5 inches high at 100 yards, and the drop at 150 yards should not be that dramitic although I have not ran the thing through a ballistic chart.