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120×570mm NATO tank ammunition (4.7 inch), also known as 120×570mmR, is a common, NATO-standard (STANAG 4385), tank gun semi-combustible cartridge used by 120mm smoothbore guns, superseding the earlier 105×617mmR cartridge used in NATO-standard rifled tank guns.
Common rifle cartridges, from the largest .50 BMG to the smallest .22 Long Rifle with a $1 United States dollar bill in the background as a reference point.. This is a table of selected pistol/submachine gun and rifle/machine gun cartridges by common name.
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The M830 is an American 120×570mm NATO high explosive anti-tank multi purpose (HEAT MP-T) cartridge which has anti-armor and anti-personnel capabilities. [1] This round is meant for the 120 mm M256 main gun of the M1A1 and M1A2 Abrams.
The L/55 is 1.32 metres (4.3 ft) longer, generating increased muzzle velocity for rounds fired through it. As the L/55 retains the same barrel geometry, it can fire the same ammunition as the L/44. The L/55 gun was retrofitted into German and Dutch Leopard 2s, and chosen as the main gun of the Spanish Leopard 2E and the Greek Leopard 2HEL.
Internal ballistics (also interior ballistics), a subfield of ballistics, is the study of the propulsion of a projectile. In guns , internal ballistics covers the time from the propellant 's ignition until the projectile exits the gun barrel . [ 1 ]
Miller twist rule is a mathematical formula derived by American physical chemist and historian of science Donald G. Miller (1927-2012) to determine the rate of twist to apply to a given bullet to provide optimum stability using a rifled barrel. [1]
The S-60 fires ammunition in 57×348SR caliber, with ballistics (see below) similar to the longer 57×438mm ammunition of Bofors 57 mm AA gun, but somewhat weaker than Soviet 57 mm anti-tank guns of World War II. Modern anti-aircraft rounds have not been developed for the gun; the main characteristics of the Soviet-era ammunition are listed in ...