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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 ...
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 ...
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:
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.
12 mm» This is a list of firearm cartridges which have bullets in the 11 millimetres (0.43 in) to 11.99 millimetres (0.472 in) caliber range. Length refers to the cartridge case length
(E.g. 1 mm diameter wire is ~18 AWG, 2 mm diameter wire is ~12 AWG, and 4 mm diameter wire is ~6 AWG). This quadruples the cross-sectional area and conductance. A decrease of ten gauge numbers (E.g. from 12 AWG to 2 AWG) multiplies the area and weight by approximately 10, and reduces the electrical resistance (and increases the conductance ) by ...
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 ]
M2 75 mm gun as mounted in medium tank M3. The 75 mm tank gun has its origins in the January 1937 specification for a light anti-aircraft gun T6 which would have supplemented heavy 3-inch guns and used the same range of 75x350R ammunition as the 75 mm field gun M1897. After the gun, which featured a 31-caliber barrel and a sliding block breech ...