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This system has largely been replaced by defining the weapon in terms of the measurement of the calibre, which is the standard today for most weapon systems in use by the world's armed forces. The 18th century standards were based on a projectile's weight, which dates back to use of muzzle loaded cannons that fired solid cannonballs. The bore ...
The .303 British (designated as the 303 British by the C.I.P. [2] and SAAMI [3]) or 7.7×56mmR, is a .303-inch (7.7 mm) calibre rimmed tapered bottleneck centerfire rifle cartridge. The .303 inch bore diameter is measured between rifling lands as is the common practice in Europe which follows the traditional black powder convention.
For example, 303 British firearms and projectiles are often "categorized" as ".30-caliber" alongside several dozen U.S. "30-caliber" cartridges despite using bullets of .310–.312-inch (7.87–7.92 mm) diameter while all U.S. "30-caliber" centerfire rifle cartridges use a common, standard .308-inch (7.82 mm) bullet outside diameter. Using ...
List of rifle cartridges, by primer type, calibre and name. ... .280 British.280 Flanged.280 Jeffery.280 Remington ... Metric. Smaller than 6 mm 4.25mm Liliput ...
The current British Standard for metallic materials including wire is BS 6722:1986, which is a solely metric standard, superseding 3737:1964, which used the SWG system. The IEC 60228, used in most parts of the world, defines standard wire sizes based on their cross-sectional areas as expressed in mm 2. [3]
The former Weights and Measures office in Seven Sisters, London (590 Seven Sisters Road). The imperial system of units, imperial system or imperial units (also known as British Imperial [1] or Exchequer Standards of 1826) is the system of units first defined in the British Weights and Measures Act 1824 and continued to be developed through a series of Weights and Measures Acts and amendments.
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The Brunswick rifle was a .704 calibre muzzle-loading percussion rifle manufactured for the British Army at the Royal Small Arms Factory at Enfield in the early 19th century. The weapon was introduced to replace the Baker rifle and weighed from over 9 and 10 pounds (4.1 and 4.5 kg) without its bayonet attached, depending on the pattern.