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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 ...
A supplemental chamber or cartridge adapter is typically used for a shorter cartridge of reduced diameter. [1] A cartridge conversion sleeve may include a short barrel of reduced bore diameter. Shotgun conversion sleeves may be called subgauge inserts , subgauge tubes , or gauge reducers .
This is a list of firearm cartridges that have bullets in the 9 millimeters (0.35 in) to 9.99 millimeters (0.393 in) caliber range.. Case length refers to the round case length.
Shotguns are classed according to gauge, a related expression. The gauge of a shotgun refers to how many lead spheres, each with a diameter equal to that of the bore, that amounts to one pound (454 g (1.0 lb)) in weight. In the case of a 12-gauge (18.5 mm) shotgun, it would take 12 spheres the size of the shotgun's bore to equal a pound. [12]
9mm P.A. (Pistole Automatik, German for "automatic pistol"), 9×22mm or 9mm P.A.K. (Pistole Automatik Knall, "automatic blank pistol") is a firearm cartridge for a non-lethal gas pistol noisemaking gun. Caliber 9mm P.A. includes various blank, gas or rubber ammunitions made for different use. 9mm P.A. Blank has also been used for theatrical ...
The 9×25mm Dillon is a pistol wildcat cartridge developed for use in USPSA/IPSC Open guns. The cartridge is made by necking down (reducing the diameter of the "neck" of the case to suit a new caliber) [ clarification needed ] a 10mm Auto case to 9 mm .
An assortment of snap caps of varying calibers, from left: (1st row) .22 LR, 9mm (both), .45 ACP, (2nd row) 30-06 (both), (3rd row) 12 Ga. A snap cap is a firearm accessory device shaped like a standard cartridge/shotshell but contains no functional components, namely the primer, propellant and projectile (bullet or slug).
The 9×21mm pistol cartridge (also known as the 9×21mm GP, 9×21mm IMI, 9mm IMI, 9×21mm Italian, or 9mm Italian) was designed by Jager (Loano, Italy), then adopted and commercialised by Israel Military Industries for those jurisdictions where military service cartridges, like the 9×19mm Parabellum, are or were illegal for civilian purchase (i.e. Italy, France, Brazil, and Mexico).