Load sounds similar to what I use in my .54. The doe I killed last year, I used a .530 ball, .022 pillow ticking patch, and 80 grains of Goex 2Fg. I bought a .535 mold from Larry Callahan and will tell you it tightened up my groups considerably. The only negative is they're fairly tough to load, so my plan this year is to use a .535 load for the first shot, then a .530 for any follow ups. I was getting baseball size accuracy at 50 yards with the .530 balls, with the .535 that went down to golf ball size.