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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 move to steel shot reduced the use of 16 and 20 gauges for waterfowl hunting, and the shorter, 2 + 3 ⁄ 4-inch (70 mm), 12-gauge shells as well. However, the 3 + 1 ⁄ 2-inch (89 mm) 12-gauge shell, with its higher SAAMI pressure rating of 14,000 psi (97 MPa) compared to standard 2 + 3 ⁄ 4-inch (70 mm) and 3-inch (76 mm) 12-gauge shells ...
It held 20 × 25-shell cartons (500 total shells) of 12 gauge ammunition and weighed around 65 lbs (Dimensions: 15" Length × 10.375" Width × 9.75" Height; Volume: 0.88 Cubic Feet). Guard shells had either a brass base (base only) with a full paper hull or partial brass case (1" long) and a long paper hull.
The ammunition may also be called semi-armor-piercing high-explosive incendiary (SAPHEI). [1] Typical of a modern HEIAP shell is the Raufoss Mk 211 [2] designed for weapons such as heavy machine guns and anti-materiel rifles. The primary purpose of these munitions is armor penetration with better beyond-armor effects. [3]
The Mk 211/NM140 is graded into two accuracy classes: Class A is match grade ammunition, while Class B is ordinary linked ammunition for machine gun use. Under the international (or Norwegian) NM nomenclature, revisions are indicated by a trailing "F n ", with "F3" being the current revision as of 2020.
A 12-gauge shotgun cartridge in a transparent plastic hull, allowing the contents to be seen. From left to right: brass, propellant, over-powder wad, shot wad, #8 birdshot, over-shot wad, and crimp. A shotgun cartridge, shotshell, or shell is a type of rimmed, cylindrical (straight-walled) ammunition used specifically in shotguns.
1914 [3] Austria-Hungary 0 [3] H 2.7×9mm 650 [3] 3 [3] 0.009 0.108 [3] 9mm Obsolete. Smallest round ever manufactured. [3] 4.6×30mm: 2000 Germany H 4.6×30mm 2410 400 0.332 0.183 30mm Bottlenecked high velocity PDW cartridge designed by Heckler & Koch in conjunction with the Heckler & Koch MP7 personal defense weapon. 5 mm Remington Rimfire ...
The M940 MPT-SD (multi-purpose tracer, self-destruct) shell is a 20×102 mm round produced by General Dynamics primarily for an anti-aircraft role. It has a range of over 2,000 metres (6,600 ft). It has a range of over 2,000 metres (6,600 ft).