This is THE ultimate reference for the collector or enthusiast. The 4th Edition Ammo Encyclopedia has 972 pages divided into 102 chapters and contains over 500 listings for current and obsolete handgun, rifle, and shotgun cartridges since the mid-1800s including detailed information, specifications, and measurements on rimfire, centerfire, and shotshell cartridges. The most important new feature of the 4rd Edition Ammo Encyclopedia is the addition of an all new 12-page color section, along with the industry's newest, hottest cartridges. Many sections have also been updated with additional information, charts and images too. Without question, this latest edition of the Ammo Encyclopedia is the most comprehensive book ever published on the wide variety of both new and older ammunition!