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Subsonic ammunition is ammunition designed to operate at velocities below the speed of sound (Mach 1), which at standard conditions is 340.29 m/s (1,116.4 ft/s). This avoids the supersonic shockwave or "crack" of a supersonic bullet, which, particularly for suppressed firearms, influences the loudness of the shot.
Smith & Wesson M&P in .38 Special produced in 1899 A .38 Special Jacketed Soft Point round Air Force issue Smith & Wesson Model 15-4 in .38 Special. In 1930, Smith & Wesson introduced a large-frame 38 Special revolver with a 5-inch barrel and fixed sights intended for police use, the Smith & Wesson 38/44 Heavy Duty.
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). [3] 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. [4]
The .38 Short Colt, also known as .38 SC, is a heeled bullet cartridge intended for metallic cartridge conversions of the cap and ball Colt 1851 Navy Revolver from the American Civil War era. [ 1 ] Later, this cartridge was fitted with a 0.358-inch (9.1 mm) diameter inside-lubricated bullet in the 125–135 grains (8.1–8.7 g) range.
Common rifle cartridges, from the largest .50 BMG to the smallest .22 Long Rifle with a $1 United States dollar bill in the background as a reference point.. This is a table of selected pistol/submachine gun and rifle/machine gun cartridges by common name.
9.6 mm (0.38 in) The .338 Whisper ( 8.59x38mm ) is a wildcat cartridge in the Whisper family, a group of cartridges developed in the early 1990s by J.D. Jones of SSK Industries . [ 1 ] Unlike the smaller caliber cartridges in the Whisper family , loads for the .338 Whisper are mainly limited to subsonic velocities.
The Whisper family was developed as a line of accurate, multi-purpose cartridges using relatively heavy rifle bullets for a given caliber in subsonic loads. [ 1 ] [ 2 ] [ 3 ] The intention was to create an extremely accurate cartridge family for military, police, competition and specialized hunting markets that could also be easily sound ...
7.62×38mmR (also known as 7.62 mm Nagant and Cartridge, Type R) is an ammunition cartridge designed for use in the Russian Nagant M1895 revolver.. A small number of experimental submachine guns (e.g., Tokarev 1927), designed by Fedor Tokarev, were also produced in a 7.62 mm Nagant chambering. [4]