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Caliber/calibre: In small arms, the internal diameter of a firearm's barrel or a cartridge's bullet, usually expressed in millimeters or hundredths of an inch; in measuring rifled barrels this may be measured across the lands (.303 British) or grooves (.308 Winchester) or; a specific cartridge for which a firearm is chambered, such as .45 ACP or .357 Magnum.
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 ...
A submachine gun is a magazine-fed carbine chambered in a small-caliber handgun cartridge (such as 9×19mm Parabellum, .45 ACP, .22 Long Rifle, and .40 S&W). They cannot be considered machine guns due to their small-caliber, hence the prefix "sub-" to differentiate them from proper machine guns. Submachine guns are commonly associated with high ...
A variation of the musket known as the caliver, a standardized "calibre" (spelled "caliber" in the US), appeared in Europe around 1567–9. [7] According to Jacob de Gheyn, the caliver was a smaller musket that did not require a fork rest. [12] Benerson Little described it as a "light musket". [31] [32]
A 7.62×51mm NATO crimped blank cartridge. The appearance of a blank cartridge can give a false sense of safety. Although blank cartridges do not contain a bullet, precautions are still required because fatalities and severe injuries have resulted on occasions when blank cartridges have been fired at very close ranges.
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A shell is a form of ammunition that is fired by a large caliber cannon or artillery piece. Before the mid-19th century, these shells were usually made of solid materials and relied on kinetic energy to have an effect. However, since that time, they are more often filled with high explosives (see artillery).
This semi-automatic pistol design allows the interchangeable barrels/receiver either 9mm Kurz or 7.65mm which probably creates some confusion as to caliber, some references state .32 ACP (7.65mm). Letter from the Museum in Vienna states emphatically that the caliber of the assassination weapon was 9mm Kurz. 1918 Lisbon, Portugal: President ...