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The .357 Smith & Wesson Magnum, .357 S&W Magnum, .357 Magnum, or 9×33mmR (as it is known in unofficial metric designation) is a smokeless powder cartridge with a 0.357 in (9.07 mm) bullet diameter. It was created by Elmer Keith , Phillip B. Sharpe, [ 2 ] and Douglas B. Wesson [ 2 ] [ 3 ] of firearm manufacturers Smith & Wesson and Winchester .
The factory guarantees that the cylinder will not burst or show any bulging or deformation with .357 Magnum ammunition developing double the C.I.P. 300.00 MPa (43,511 psi) P max piezo pressure, meaning the cylinder can withstand 600.00 MPa (87,023 psi), or 43.5 tons per square inch). Barrels are manufactured by cold-hammering.
Also available with pairs of handgun/rifled slug barrels in .357 Magnum/20-gauge and .44 Magnum/12-gauge. [21] Standard, Synthetic, Superlight, Ultra Varmint, Ultra Hunter, Buffalo Classic, CR Carbine, and Sportster models available. A version with a 16" threaded barrel chambered in .300 AAC Blackout is made for Advanced Armament Corporation. [22]
This process (which allows the cartridge to contain more propellant and thus increases the potential energy of the bullet) was used to make the powerful .357 Magnum cartridge from the much weaker .38 Special: A .357 magnum bullet has more than 3 times more energy than a .38 special bullet of the same weight. Increasing the length of a bullet's ...
The 20-gauge shotgun, also known as 20 bore, is a type of smoothbore shotgun. 20-gauge shotguns have a bore diameter of .615 in (15.6 mm), while the 12-gauge has a bore diameter of .729 in (18.5 mm). [ 2 ] 12-gauge and 20-gauge shotguns are the most popular gauges in the United States .
The goal of the .357 SIG project was to offer a level of performance equal to the highly effective 125-grain (8.1 g) .357 Magnum load. [20] [21] Measurements of standard factory .357 SIG cartridges loaded with 125-grain (8.1 g) bullets showed approximate muzzle velocities of 1,450 feet per second (440 m/s) out of a 4 inches (102 mm) barrel ...
This is a table of selected pistol/submachine gun and rifle/machine gun cartridges by common name. Data values are the highest found for the cartridge, and might not occur in the same load (e.g. the highest muzzle energy might not be in the same load as the highest muzzle velocity, since the bullet weights can differ between loads).
The minimum barrel length for shotguns in most of the U.S. is 18 inches (460 mm), and this barrel length (sometimes 18.5–20 in (470–510 mm) to increase magazine capacity and/or ensure the gun is legal regardless of measuring differences [3]) is the primary choice for riot shotguns. The shorter barrel makes the weapon easier to maneuver ...