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The 38 Super, also known as 38 Superauto, 38 Super Auto, or 9×23mmSR, is a pistol cartridge that fires a 0.356-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 propels a 130-grain (8.4 g) bullet at 1,050 ft/s (320.0 m/s), whereas the 38 Super pushes the same bullet at 1,280 ft/s (390.1 m/s). The 38 Super has gained distinction as the caliber of choice for many top practical shooting competitors; it remains one of the dominant calibers in IPSC competition.

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