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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.
This measurement comes from the time when early cannons were designated in a similar manner—a "12 pounder" would be a cannon that fired a 12-pound (5.4 kg) cannonball; inversely, an individual "12-gauge" shot would in fact be a 1 ⁄ 12 pounder. Thus, a 10-gauge shotgun has a larger-diameter barrel than a 12-gauge shotgun, which has a larger ...
T3AGD = 675 Shells, Shotgun, 12 Gauge, No.8 Chilled Shot, in 25-shell cartons. 27 cartons per wooden M1917 ammunition packing box. Gross Weight: 94 lbs. Volume: 1.5 cubic feet. T3AGE = 360 Shells, Shotgun, 12 Gauge, No.8 Chilled Shot, in 10-shell cartons. 12 cartons per M10 metal ammo can (120 shells). 3 × M10 ammo cans per M15 wooden crate.
For example, the barrel of a 12-gauge shotgun is equal to the diameter of a 1/12 of a pound lead ball (0.729 in) and a 20-gauge can fit a 1/20 pound lead ball (0.615 in). Using this method, a .410 bore is equivalent to a (hypothetical) 67-gauge, instead of the incorrectly labeled 36 gauge (0.506) in Europe and South America. [14] [15]
12 gauge 20 gauge Italy: 1999 Benelli Raffaello: Benelli Armi: 12 gauge Italy: 1990 Benelli Supernova: Benelli Armi: 12 gauge Italy: 2006 Benelli Vinci: Benelli Armi: 12 gauge Italy: 2009 Beretta 682: Fabbrica d'Armi Pietro Beretta: 12 gauge 20 gauge 28 gauge.410 bore Italy: 1984 Beretta 1201FP: Fabbrica d'Armi Pietro Beretta: 12 gauge Italy ...
During the Vietnam War the United States employed 12-gauge combat shotguns using flechette loads. [ 9 ] [ 10 ] These plastic-cased shells were issued on a limited trial basis during the Vietnam War. Cartridges manufactured by the Western Cartridge Company contained 20 flechettes, each 18.5 mm (0.73 in) long and weighing 7.3 gr (0.47 g); Federal ...
A 12-gauge shotgun shell in a transparent plastic hull, allowing the contents to be seen. Polymer-cased ammunition (PCA) is firearm ammunition with casings made from synthetic polymer instead of the typical metallic casing. PCA is considered a new alternative that potentially reduces production cost and weight for long guns and handguns.
The diameter of the wad slug is slightly less than the nominal bore diameter, being around 0.690 in (17.5 mm) for a 12-gauge wad slug, and a wad slug is generally cast solely from pure lead, necessary for increasing safety if the slug is ever fired through a choked shotgun. Common 12 gauge slug masses are 7 ⁄ 8 oz ((383 gr (24.8 g)), 1 oz ...