Learn how to make your chart accurate as possible. Getting the necessary measured drops. Jiggling a Ballistics program to make your chart as close as possible at all ranges. Scope adjustments. Long range scope bases. Testing your scope for repeatability. Trajectory, what the bullet does after leaving the barrel. Get a quick zero. Forget that true MOA is 1.047" @ 100 yds. and go out and make those hits at long range with confidence. Many tips on long range shooting.