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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).
For example, the dimension of the chamber, the shotgun bore dimension and the valid proof load and commercial ammunition, as defined globally by the C.I.P.; defined in Great Britain by the Rules, regulations and scales applicable to the proof of small arms (2006) [1] of The London Proof House and The Birmingham Proof House, as referred in the ...
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. A rifled slug is for smooth bores and a sabot slug is for rifled barrels.
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 ...
The saboted slug had half the frontal area of the old slugs, which translated to less drag, and greater penetration. Lighter, faster slugs were also possible, allowing for a flatter trajectory and longer range. With the wide selection of barrels, shotshells and slugs, the modern shotgun is a tremendously versatile tool.
The barrel seal activator is meant to be removed when using 3 + 1 ⁄ 2-inch or 3-inch shells, and installed when using shorter shells. [1] Some Model 11-87s have interchangeable screw-in chokes; other barrels are available with fixed chokes. Barrels are not interchangeable between the Model 1100 and Model 11-87. [1]
The Mossberg 500 is a series of pump-action shotguns manufactured by O.F. Mossberg & Sons. [1] The 500 series comprises widely varying models of hammerless repeaters, all of which share the same basic receiver and action, but differ in bore size, barrel length, choke options, magazine capacity, stock and forearm materials.
It differs in that it features a modified-choke, a 28 inch barrel (48¾" overall), and weighs 7½ pounds. [2] Model 55 Slug Gun: The Model 55 Slug Gun was a 12 gauge produced from 1973 until 1979. [4] Model 5510 SuperGoose: Another variant called the Model 5510 SuperGoose was produced and chambered for the 10-gauge (3½") cartridge. The ...