The original text of Understanding Ballistics has been edited, improved, & expanded with up-to-date information. Throughout are more formulas, detailed explainations & examples, more draawings, charts, and technical details explaining basic to advanced firearm ballistics, in a simplified and easy to follow style. This is the newest edition of the bible of the shooting sports. A must for all police officers, hunters, target shooters, handloaders, whether begineer or expert. This book is a "gotta have.