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The M134 Minigun is an American 7.62×51mm NATO six-barrel rotary machine gun with a high rate of fire (2,000 to 6,000 rounds per minute). [2] It features a Gatling-style rotating barrel assembly with an external power source, normally an electric motor.
The Spall and Maryak approach applies when the shot data represent a mixture of different projectile characteristics (e.g., shots from multiple munitions types or from multiple locations directed at one target).
The size of the grouping is described as the diameter of the smallest circle that can be drawn to contain all the shots, [5] typically only measured from the center points of each impact (known as "center-to-center size"). A "flier" is a shot from the same shooting session that is distinctly farther from the general grouping, considered to be ...
Sample 5-shot group measuring about 7 mm (0.28 in) at 91 m (100 yd), which corresponds to an angular size of about 0.08 mrad (0.26 moa). Same rifle and load, 25 shots at 91 m (100 yd). Note that the group size is about double, measuring about 15 mm (0.59 in) at 91 m (100 yd), which corresponds to an angular size of about 0.15 mrad (0.51 moa ).
The six most common shotgun gauges, in descending order of size, are the 10 gauge, 12 gauge, 16 gauge, 20 gauge, 28 gauge, and .410 bore. [7] By far the most popular is the 12 gauge, [7] particularly in the United States. [8] The 20-gauge shotgun is the next most popular size [citation needed], and is popular for upland game hunting. The next ...
Another factor influencing rate of fire is the supply of ammunition. At 50 rps (3,000 rpm), a five-second burst from an M134 Minigun would use approximately 6.3 kilograms (14 lb) of 7.62 mm ammunition; this alone would make it an impractical weapon for infantry who have to carry a reasonable supply of ammunition with them. For this and other ...
Each system consists of a modified Phalanx 1B CIWS, powered by an attached generator and mounted on a trailer for mobility. Including the same 20 mm M61A1 Gatling gun, the unit is likewise capable of firing 4,500 20 mm rounds per minute.
With a fast-firing gun using standard rifle ammunition, the US Army and US Air Force showed interest for use of the XM214 on aircraft, helicopters, and armored vehicles. The smaller and lighter Microgun could replace the Minigun on heavily armed gunship aircraft and attack helicopters, freeing up space for ammo, equipment, and even more guns.