I shoot the .503's andI push them with 80 grains of Triple Se7en or 85 grains of Goex 3f. Real accurate shooting load. And I do not use a wad although I got two more boxes from him so I am going to try them with a wad and see if it makes that big a difference. My Black Diamond XR is scoped. It also shoots the 375 grain Buffalo Bullet SSB's that Triple Se7en suggested a while back. With 100 grains of Goex 2f it will lay them in there all day and that all lead bullet will do the job on about anything it hits.