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The Browning Double Automatic Shotgun is a short-recoil operated [2] semi-automatic (auto-loading) 12-gauge shotgun with a 2 + 3 ⁄ 4-inch chamber. The firearm was produced between 1952 and 1971, with production volume of approximately 67,000. Production date amended from 1955 to 1952 according to direct information from manufacturer.
Military use of combat shotguns through the 20th century has created a need for ammunition maximizing the combat effectiveness of such weapons within the limitations of international law. 12-gauge has been widely accepted as an appropriate bore diameter to provide an effective number of projectiles within an acceptable recoil. Early 12-gauge ...
Sentinel Arms Striker-12—A fully licensed and improved copy of the Armsel Striker for the American market made by Sentinel Arms Co. It was available with an 18-inch barrel and a 7-inch stockless version. [5] Cobray/SWD Street Sweeper—A lower-end clone of the Armsel Striker, having a limited parts commonality to the original weapons system. [5]
The six most common shotgun gauges, in descending order of size, are the 10 gauge, 12 gauge, 16 gauge, 20 gauge, 28 gauge, and .410 bore. [7] By far the most popular is the 12 gauge, [7] particularly in the United States. [8] The 20-gauge shotgun is the next most popular size [citation needed], and is popular for upland game hunting. The next ...
2.1 Category 1 : steel specified by purpose of use and mechanical properties. ... X5CrNiMo17-12-2 X5CrNiMo18-14-3: 316 [8] S31600: X5CrNiMo17 12 2 X5CrNiMo17 13 3
ISO 18265: "Metallic materials — Conversion of hardness values" (2013) ASTM E140-12B(2019)e1: "Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness" (2019)
The Model 12 was designed by Winchester engineer T.C. Johnson, and was based in part on the M1893/97 design by John M. Browning, in that it used a sliding forearm or "pump action" to cycle the mechanism and a tilting breechblock. [1] It was initially available in 20 gauge only (12 and 16 gauge guns were not sold until late 1914).
The Winchester Model 1200 was initially produced with barrel lengths of 30 inches (760 mm) or 28 inches (710 mm) chambered for 2.75-inch (70 mm) cartridges in either 12, 16, or 20-gauge. The magazine, with a capacity of four rounds was provided with a wooden insert to limit magazine capacity to two rounds in the magazine.