Английская Википедия:20-gauge shotgun
Шаблон:Short description Шаблон:Infobox firearm cartridge The 20 gauge shotgun, also known as 20 bore, is a type of smoothbore shotgun. 20 gauge shotguns fire a shell with a diameter of Шаблон:Convert, while the 12 gauge shell has a diameter of Шаблон:Convert.[1] 12 gauge and 20 gauge shotguns are the most popular gauges in the United States.[2][3] The 20 gauge is popular among upland game hunters, target shooters, and skeet shooters.[3]
Description
It takes 20 lead balls of the diameter of a 20 gauge shotgun bore to equal one pound, while it only takes 12 lead balls of the diameter of a 12 gauge shotgun bore to equal the same weight.[1] A 20 gauge shotgun is more suitable for hunting certain types of game or for some hunters because it may have less felt recoil than an identical shotgun in a larger gauge, [4] and guns may be smaller and weigh less, though this has changed since the introduction of the 3 inch magnum shotshell.[2]
Regarding the yellow body tube color 20gauge ammunition usually has, it has been reserved in SAAMI documentation saying "SAAMI has reserved yellow for 20 gauge ammunition" "This ammunition shall have a body tube that is primarily yellow" "Yellow shall not be used for any other gauge/bore shotshell body" "No other recommendations are made as to the color of service body tubes for other gauges/bores"[5]
Specifications
20 gauge shotguns are especially suitable for hunting game birds such as quail, grouse and mallards when using lead-free birdshot. A 20 gauge buckshot load would most commonly be utilized in close- to mid-range self defense scenarios.Шаблон:Citation needed While slug loads are ballistically less accurate than rounds used in rifles, powerful, high-grain slug loads can provide improved ballistics for hunting deer when paired with a rifled barrel.[6]
Recoil
While the 20 gauge is generally perceived to have less felt recoil than the 12 gauge, there are too many variables, including gun weight, type of shotgun, stock pattern, shot weight, shell size, etc. for that opinion to be a fact.[7][8] There may be little to no difference between the two when using target ammunition. Loads for waterfowl will tend to produce more felt recoil in a 12 gauge shotgun than in a 20, but this may not be the case depending on the gun used.[7] Full-power 20 gauge shells fired from a light Шаблон:Convert gun will have more felt recoil than those fired from a heavy Шаблон:Convert gun.[9] To do a true comparison, two identical shotguns, one in 12 and one in 20, with identical ammunition (other than gauge) have to be compared. In those cases, the 12 gauge does generate more recoil energy than the 20.[7][10]
See also
References
External links
- Cartridge & Chamber Drawings ANSI/SAAMI Cartridge & Chamber Drawings PDF links page
- [1] ANSI/SAAMI Cartridge & Chamber Drawings, 2019-04-23 PDF for Shotshells
