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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.
Cartridges manufactured by Western Cartridge Company contained twenty flechettes 18.5 millimetres (0.73 in) long and weighing 7.3 grains (0.47 g) each. The flechettes were packed in a plastic cup with granulated white polyethylene to maintain alignment with the bore axis, and supported by a metal disk to prevent penetration of the over-powder ...
Gauge was determined from the weight of a solid sphere of lead that will fit the bore of the firearm and is expressed as the multiplicative inverse of the sphere's weight as a fraction of a pound, e.g., a one-twelfth pound lead ball fits a 12-gauge bore. Therefore with a 12-gauge, it would take 12 balls of lead of the same size as the 12 gauge ...
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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]
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 .
A Remington 870 12 gauge with sighted cylinder bore barrel suitable for Foster slugs and buckshot The "Foster slug", invented by Karl M. Foster in 1931, and patented in 1947 ( U.S. patent 2,414,863 ), is a type of shotgun slug designed to be fired through a smoothbore shotgun barrel, even though it commonly labeled as a "rifled" slug.
The 8 bore and 10 bore guns were considered suitable for dangerous game, whilst the most common 12 bore was suitable for medium game. [ 3 ] In his work Thirty-seven years of big game shooting in Cooch Behar , the Duars, and Assam , Maharajah Nripendra Narayan of Cooch Behar states the 12 bore Paradox "is an excellent weapon for Tiger , Bear or ...