It still has more penetrating power than lighter weapons such as general-purpose machine guns, though it is significantly heavier and more cumbersome to transport. Since the mid-1950s, some armored personnel carriers and utility vehicles have been made to withstand 12.7 mm machine gun fire, restricting the destructive capability of the M2. An upgraded variant of the M2 Browning HB machine gun used during World War II is still in use today. 50 BMG was primarily used in the M2 Browning machine gun, in both its "light barrel" aircraft mount version and the "heavy barrel" (HB) version on ground vehicles, for anti-aircraft purposes. 50 caliber armor-piercing cartridges went on to function as an anti-aircraft and anti-vehicular machine gun, capable of penetrating 0.9 inches (23 mm) of face-hardened armor steel plate at 200 meters (220 yd), 1 inch (25 mm) of rolled homogeneous armor at the same range, and 0.75 inches (19 mm) at 547 yards (500 m). This gun was later developed into the M2HB Browning which with its. The round was put into use in the M1921 Browning machine gun. Teamed with Colt, he produced prototypes ready for testing and, ironically, completed them by Nov. The Army then returned to John Browning for the actual gun.
Subsequently, Frankford Arsenal took over from Winchester, producing the historic. The American Rifleman further explains that development was "eputedly influenced by Germany's 13.2x92 mm SR (.53-cal.) anti-tank rifle" and that then "Ordnance contracted with Winchester to design a. You make up some cartridges and we'll do some shooting.'" Browning pondered the situation and, according to his son John, replied, 'Well, the cartridge sounds pretty good to start. They wanted a heavy projectile at 2700 feet per second (f.p.s.), but the ammunition did not exist. Army Ordnance officers to consult Browning. American interest in an armor-piercing cartridge was influenced by the marginal French 11 mm design, prompting U.S. According to the American Rifleman: "Actually, the Browning. 50 BMG round is sometimes confused with the German 13.2 mm TuF, which was developed by Germany for an anti-tank rifle to combat British tanks during WWI and against aircraft. He wanted the round to be used in a machine gun, and wanted the machine gun to be based on a scaled-up version of the M1917 Browning. In response to the need for new anti-aircraft weaponry during World War I, John Browning developed the. 50 caliber rifles by allowing more accurate fire than lower quality rounds. A wide variety of ammunition is available, and the availability of match grade ammunition has increased the usefulness of. 50 BMG cartridge is also used in anti-materiel rifles. The rounds intended for machine guns are made into a continuous belt using metallic links. The cartridge itself has been made in many variants: multiple generations of regular ball, tracer, armor-piercing (AP), incendiary, and saboted sub-caliber rounds. Under STANAG 4383, it is a standard service cartridge for NATO forces as well as many non-NATO countries. 50 in (12.7 mm) caliber cartridge developed for the M2 Browning heavy machine gun in the late 1910s, entering official service in 1921. 50 BMG, 12.7×99mm NATO and designated as the 50 Browning by the C.I.P. Saudi–Yemeni border conflict (2015–present)
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