If you've ever wondered what goes into making that little trajectory chart printed on the back of your ammo box, custom ammo maker and ballistics expert Phil Massaro can help. In Massaro breaks down how environmental conditions, trajectory, ballistic coefficient, bullet shape/construction, and barrel length all affect accuracy. The more you understand about these variables, the more confidence you will gain, and that will result in making first-round hits. Drawing from the knowledge in the author's earlier work, this new title presents an in-depth study of internal, external and termainal ballisitics in plain language, plus additional information in a compact, easy-to-understand format ideal for beginners and intermediate shooters alike. Massaro goes into great detail on the latest developments in the world of rifle shooting with coverage of: