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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 ...
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).
The 15 cm guns would have a caliber of 14.91 cm and would come in a two 25 caliber versions, a 30 caliber version, and a 35 caliber long version. [21] However, the first 15 cm L/30 gun that Krupp actually made had a caliber of 152.4 mm (i.e. 6"). Its consistent name could have been 15 cm MRK L/30.
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.
12 cm kan M/94 (Bofors 12 cm naval gun L/45 model 1894) Sweden-Norway: 1890s - Cold War 120 mm (4.7 in) 12 cm kan M/11 (Bofors 12 cm naval gun L/45 model 1911) Sweden: World War I - Cold War 120 mm (4.7 in) 12 cm kan M/24 (Bofors 12 cm naval gun L/45 model 1924) Sweden: Interwar - Cold War 120 mm (4.7 in) Bofors 120 mm Automatic Gun L/50
Common rifle cartridges, from the largest .50 BMG to the smallest .22 Long Rifle with a $1 United States dollar bill in the background as a reference point.. This is a table of selected pistol/submachine gun and rifle/machine gun cartridges by common name.
Many pistol cartridges are in this caliber; the most common are: 7.62×25mm Tokarev, also known as 7.62 mm TT, is used in the Tokarev pistol, and many of the World War II Soviet submachine guns; 7.63×25mm Mauser, which was the basis for, and has nearly identical dimensions to, the Tokarev, but has different loading specifications.
.22 caliber, or 5.6 mm, refers to a common firearms bore diameter of 0.22 inch (5.6 mm) in both rimfire and centerfire cartridges. Cartridges in this caliber include the very widely used .22 Long Rifle and .223 Remington/5.56×45mm NATO. .22 inch is also a popular air gun pellet caliber, second only to the ubiquitous .177 caliber.