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The introduction of this new design did not however stop continued use and production of the 13.2×99mm Hotchkiss "Long" cartridge by countries whom had already adopted it and in 1939 the cartridge saw new interest on the export market due to the newly developed 13.2 mm FN Browning aircraft machine gun, which was offered in both 12.7 × 99 mm ...
All measurements are in mm (in). 13 mm (.5118 in) and over. Name Date Bullet diameter Case length Rim Base Shoulder Neck Cartridge length 13×64mm [1] 12.91: 64: 17.2:
Sir Francis Beaufort. The scale that carries Beaufort's name had a long and complex evolution from the previous work of others (including Daniel Defoe the century before). In the 18th century, naval officers made regular weather observations, but there was no standard scale and so they could be very subjective — one man's "stiff breeze" might be another's "soft breeze"—: Beaufort succeeded ...
The 13.2 × 92 mm SR, also known as Mauser 13.2 mm TuF (German: Tank und Flieger; literally "tank and aircraft", historical military designation), is a semi-rimmed rifle and machine gun cartridge developed by the German Empire for anti-tank and anti-aircraft use which was introduced during World War I.
From 1.0 through 2.95 mm, sizes are defined as follows, where N is an integer from 10 through 29: N · 0.1 mm; N · 0.1 + 0.05 mm; From 3.0 through 13.9 mm, sizes are defined as follows, where N is an integer from 30 through 139: N · 0.1 mm; From 14.0 through 25.0 mm, sizes are defined as follows, where M is an integer from 14 through 25: M ...
The litre was also used in several subsequent versions of the metric system and is accepted for use with the SI, [3] although not an SI unit—the SI unit of volume is the cubic metre (m 3). The spelling used by the International Bureau of Weights and Measures is "litre", [ 3 ] a spelling which is shared by most English-speaking countries.
The specified maximum diameter of an unfired .50 BMG bullet is 0.510-inch (13.0 mm); while this appears to be over the .50 inch (12.7 mm) maximum allowed for non-sporting Title I firearms under the U.S. National Firearms Act, the barrel of a .50 BMG rifle is only .50 inch (12.7 mm) across the rifling lands and slightly larger in the grooves ...
R 50 at 25 m (27 yd) means the closest 50 percent of the shot group will all be within a circle of 25 mm (1.0 in) radius at 25 m (27 yd). The 7N21 ( Cyrillic : 7 Н 21) 9×19mm overpressure variant features an armor-piercing bullet and generates a peak pressure of 280 MPa (41,000 psi). [ 36 ]