Ryan Cleckner explains that not all scopes track identically and offers a drill you can use to find out if your scope over or under tracks in both windage and elevation.

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Looking for more long range shooting instruction? Ryan Cleckner’s book, Long Range Shooting Handbook, is the complete beginner’s guide to long range shooting written in simple every-day language so that it’s easy to follow. Included are personal tips and best advice from his years of special operations sniper schooling and experience, and as a sniper instructor. If you are an experienced shooter, this guide will be a resource covering the principles and theory of long range shooting.

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