Top 10 Things You Didn't Know About The .357 Magnum
The .357 Magnum, born from the .38 Special, ushered in the 'magnum era' of handgun cartridges. Developed by Elmer Keith and others, its primary purpose was to penetrate automobile cover during the gangster era. Key design features include a case 1/8 inch longer than the .38 Special for safety and a European metric designation of 9x33mm. The first revolver chambered for it was the Smith & Wesson Registered Magnum, later the Model 27, with the first unit gifted to FBI Director J. Edgar Hoover.









