38 Super Auto

The .38 Super, also known as .38 Superauto or .38 Super Auto, is a pistol cartridge that fires a .356-inch-diameter (9.04 mm) bullet.It was introduced in the late 1920s as a higher pressure loading of the .38 ACP, also known as .38 Auto.The older .38 ACP cartridge propelled a 130-grain (8.4 g) bullet at 1,050 ft/s (320.0 m/s), whereas the .38 Super pushed the same bullet at 1,280 ft/s (390.1 ...