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The length of the barrel (especially for larger guns) is often quoted in multiples of the caliber, used, for example, in US naval rifles 3 in (76 mm) or larger. [2] The effective length of the barrel (from breech to muzzle) is divided by the barrel diameter to give a dimensionless quantity.
The gauge (in American English or more commonly referred to as bore in British English) of a firearm is a unit of measurement used to express the inner diameter (bore diameter) and other necessary parameters to define in general a smoothbore barrel (compare to caliber, which defines a barrel with rifling and its cartridge).
While modern firearms are generally referred to by the name of the cartridge the gun is chambered for, they are still categorized together based on bore diameter. [citation needed] For example, a firearm might be described as a "30 caliber rifle", which could accommodate any of a wide range of cartridges using a roughly 0.30 inches (7.6 mm) projectile; or as a "22 rimfire", referring to any ...
Firearms are federally regulated in Canada through the Firearms Act, the Criminal Code, and the Canadian Firearms Program, a program operated within the Royal Canadian Mounted Police. Regulation is largely about licensing and registration of firearms , including air guns with a muzzle velocity of more than 500 ft/s or 150 m/s and muzzle energy ...
Canada: Military: 1917–1920: Colt M1911, Colt New Service, and S&W Hand Ejector 2nd Model.45 ACP .455 Webley .455 Webley Semi-automatic Revolver Revolver USA: Several types of handguns issued [31] Dominion Police Canada: Federal: 1868–1920: Enfield Mk II.476 Enfield: Service Revolver United Kingdom [32] New Brunswick Highway Patrol New ...
Below is a list of rimfire cartridges (RF), ordered by caliber, small to large. Rimfire ammunition is a type of metallic cartridge whose primer is located within a hollow circumferential rim protruding from the base of its casing. The most common rimfire cartridges are chambered for .17 caliber and .22 caliber. The bullet diameter for .17 ...
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The British standard ordnance weights and measurements for the artillery were established by the Master General of Ordnance in 1764, and these were not altered until 1919, [citation needed] when the metric system was additionally introduced.