Everything you've ever wanted to know about America's favorite handgun cartridge! Designed nearly a century ago, the .45 ACP cartridge has earned a well-deserved reputation as a superbly accurate, slap-em-down handgun cartridge. An honored veteran of two World Wars, Korea, Vietnam and lesser conflicts across the globe, the .45 ACP is now more popular than ever for competition shooting, law enforcement and self-defense. Now, just in time for the .45 ACPs 100th anniversary, handgun expert Pat Sweeney gives us the inside scoop on America's favorite big-bore cartridge. If you own a handgun or carbine chambered for the big .45, or if you're considering buying on, you'll find everything you need in the Gun Digest Big Fat Book of the .45 ACP. It's all here: The origins of the .45 ACP and the guns that use it Reloading tips, tricks and techniques The inside story of .45 ACP cases, bullets, primers and powder And so much more! It's the best one-volume guide to the most popular big-bore handgun cartridge of all time!