:hmm: I just gone thru this today with my new GPR 50 cal. trying to work up loads. I started with 60 gr.3f at 121/2 yds,ball printed 1 inch low--50 yds printed 8 inches low, 100 yds 18 inches low soooo worked up to 80 gr,ball printed up 3 inches. I am now working on the sights, finally settled...