It does not, however, relieve you of the responsibility of checking on the range. Guns are individuals, and if you want to know for sure where they’re shooting, you have to go out and burn powder. For example, just this past week I found that one 175-grain bullet hit 18 inches higher at 600 yards than another at the same muzzle velocity. The only difference was a BC of .496 for one slug and .512 for the other. But, they landed a foot and a half apart. If I had gone by paper figures, I would have said this piddling difference would not have mattered, and I would have been wrong. You’ve gotta shoot to be sure.