OH yeah!! I have a CVA Bobcat and shoot the 370 Maxi Ball (or did you mean Maxi Hunter, cause that one is 350 grains, the Maxi Ball is 370). Anyway, I shoot the Maxi Ball on top of 80 grains of Pyrodex or Goex 2f, and can hit the same POI with every shot. That load is pretty stiff. 90 I can barely control, and 100 grains really rocks me to the point that I can't make a 6" group at 50 yards!!