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The .38 Super, also known as .38 Super Auto, .38 Super Automatic, .38 Super Automatic +P (High Pressure Variant), .38 Super +P (High Pressure Variant), or 9×23mmSR, [2] 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 .38 ACP (Automatic Colt Pistol), also known as the .38 Auto, .38 Automatic, or 9×23mmSR, is a semi-rimmed pistol cartridge that was introduced at the turn of the 20th century for the John Browning-designed Colt M1900. It was first used in Colt's Model 1897 prototype, which he did not produce.
In comparison to the long-established .38 Super Auto, also a 9×23mm, the new cartridge was rimless rather than semi-rimmed. Drawing of 9×23 Winchester cartridge. Announced to the public in early 1996 at an NRA convention, the 9×23mm Winchester cartridge was claimed to have the lowest recoiling load and still qualify for Major Power Factor ...
To have a consistent platform to test the various sizes and shapes of ammunition, a gunsmith was commissioned to create a custom barrel to fit each caliber tested. These barrels fit into a single housing and can be swapped out easily, so the team can remove them for cutting. Each brand of ammunition in each caliber/cartridge was tested at 18".
This is a list of firearm cartridges that have bullets in the 9 millimeters (0.35 in) to 9.99 millimeters (0.393 in) caliber range.. Case length refers to the round case length.
European models such as .32 S&W automatics from Walther, the now discontinued Smith & Wesson Model 52, and others are common, as are M1911 variants in smaller calibers, such as .32 ACP, .380 ACP, .38 Special, 9mm Parabellum, or .38 Super. One advantage of .45 caliber over .38 caliber is that the larger diameter hole made will be able cut a ...
The desire to get the benefit of major scoring has led to some competitors adopting high speed 9 mm cartridges loaded to major, such as .38 Super. The felt recoil of a normal handgun in .38 Super is similar to the .45 ACP, but the higher pressure in the .38 Super provides more gas pressure for muzzle brakes. The .38 Super caliber became popular ...
The AMT Backup was available in a wide range of calibers: .22 LR, .380 ACP, .38 Super, 9×19mm, .357 SIG, .40 S&W, .400 Corbon and .45 ACP have all been offered. The pistol's marketing slogan was "the smallest, most powerful" backup weapon available (referring to the 45 ACP version).