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  2. 20-gauge shotgun - Wikipedia

    en.wikipedia.org/wiki/20-gauge_shotgun

    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 .

  3. Sabot (firearms) - Wikipedia

    en.wikipedia.org/wiki/Sabot_(firearms)

    A sabot (UK: / sæˈboʊ, ˈsæboʊ /, US: / ˈseɪboʊ /) is a supportive device used in firearm / artillery ammunitions to fit/patch around a projectile, such as a bullet / slug or a flechette -like projectile (such as a kinetic energy penetrator), and keep it aligned in the center of the barrel when fired. It allows a narrower projectile ...

  4. Shotgun cartridge - Wikipedia

    en.wikipedia.org/wiki/Shotgun_cartridge

    Shotgun cartridge. 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 ...

  5. Shotgun slug - Wikipedia

    en.wikipedia.org/wiki/Shotgun_slug

    The wad slug is loaded using a standard shotshell wad, which acts like a sabot. 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 ...

  6. Saboted light armor penetrator - Wikipedia

    en.wikipedia.org/wiki/Saboted_light_armor_penetrator

    The saboted light armor penetrator (SLAP) family of firearm ammunition is designed to penetrate armor more efficiently than standard armor-piercing ammunition. In the US it was developed by the Marine Corps during the mid/late 1980s and was approved for service use in 1990 during Operation Desert Storm. It uses a reduced caliber, heavy metal ...

  7. Armour-piercing discarding sabot - Wikipedia

    en.wikipedia.org/wiki/Armour-piercing_discarding...

    Armor-piercing discarding sabot (APDS) is a type of spin-stabilized kinetic energy projectile for anti-armor warfare. Each projectile consists of a sub-caliber round fitted with a sabot. The combination of a lighter sub-caliber projectile with a full-caliber propellant charge allows for an increase in muzzle velocity compared to full-caliber ...

  8. 20 mm caliber - Wikipedia

    en.wikipedia.org/wiki/20_mm_caliber

    20 mm caliber is a specific size of popular autocannon ammunition. The dividing line between smaller-caliber weapons, commonly called "guns", from larger-caliber "cannons" (e.g. machine gun vs. autocannon), is conventionally taken to be the 20 mm round, the smallest caliber of autocannon. All 20 mm cartridges have an outside projectile (bullet ...

  9. Shotgun - Wikipedia

    en.wikipedia.org/wiki/Shotgun

    While some slugs are exactly that—a 12-gauge metal projectile in a cartridge—a sabot is a smaller but more aerodynamic projectile surrounded by a "shoe" of some other material. This "sabot" jacket seals the barrel, increasing pressure and acceleration, while also inducing spin on the projectile in a rifled barrel.