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The .50 BMG (.50 Browning Machine Gun), also known as 12.7×99mm NATO, and designated as the 50 Browning by the C.I.P., [1] is a .50 in (12.7 mm) caliber cartridge developed for the M2 Browning heavy machine gun in the late 1910s, entering official service in 1921.
The 12.7 × 108 mm has 22.72 ml (350 grains) H 2 O cartridge case capacity. 12.7 × 108 mm maximum cartridge dimensions. [citation needed] All sizes in millimeters (mm). Americans define the shoulder angle at alpha/2 ≈ 18.16 degrees. According to guidelines the 12.7 × 108 mm case can handle up to 360 MPa (52,213 psi) piezo pressure.
With normal bullet weights between 300 and 400 grains (19 and 26 g), overall cartridge length shorter than that of an AR-15 magazine well, and holding to pressures of 33,000 psi limited by the AR bolt strength system, [2] the .50 Beowulf is best described as a low-velocity, heavy caliber, making its ballistics roughly equivalent to those of ...
The .500 Linebaugh utilizes a bore diameter of .500" with the corresponding bullet diameter of .510", the same as the .50 BMG and other .50 caliber rifles, while the .50 Action Express, .500 S&W Magnum, and .500 S&W Special use .490" bore diameters and correspondingly smaller .500" bullet diameters. The smaller .500" diameter was further ...
13 mm» This is a list of firearm cartridges which have bullets in the 12 millimetres (0.47 in) to 12.99 millimetres (0.511 in) caliber range. Length refers to the cartridge case length.
2 mm Kolibri: 1914 [3] Austria-Hungary 0 [3] H 2.7×9mm 650 [3] 3 [3] 0.009 0.108 [3] 9mm Obsolete. Smallest round ever manufactured. [3] 4.6×30mm: 2000 Germany H 4.6×30mm 2410 400 0.332 0.183 30mm Bottlenecked high velocity PDW cartridge designed by Heckler & Koch in conjunction with the Heckler & Koch MP7 personal defense weapon. 5 mm ...
The high penetration VKS round can penetrate up to 16 mm (0.63 in) of steel at 200 metres (220 yd) or body armor up to GOST 5 or NIJ III at 100 metres (110 yd). The accuracy of this cartridge when loaded with precision VKS bullets is claimed to be one MOA at 100 metres (110 yd) up to the effective range limit of 690 metres (750 yd).
The Mk 211 is a very popular .50 caliber sniper round used in the Barrett M82 rifle and other .50 BMG rifles. [5] It is also often used in heavy machine guns such as the M2 Browning, but not the M85. Due to its popularity, several U.S. arms manufacturers produce the round under license from NAMMO Raufoss AS. [6]
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