M mehavey New member Nov 28, 2016 #21 FWIW: (Just to point out an interesting -- but well-known to the military -- shortcut) Assume: - 180gr GrandSlam - 60ksi load/N570 - 24" barrel - 3,150fps - Scope center 1¼" above bore center Zero at 25yds (dead zero) Point blank ±3" out past 275yds ...walk away.
FWIW: (Just to point out an interesting -- but well-known to the military -- shortcut) Assume: - 180gr GrandSlam - 60ksi load/N570 - 24" barrel - 3,150fps - Scope center 1¼" above bore center Zero at 25yds (dead zero) Point blank ±3" out past 275yds ...walk away.
