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Test barrel length: 4 inches Source(s): Federal Premium, Gun University [ 1 ] [ 2 ] .30 Super Carry , also known as .30 SC , is a rimless tapered pistol cartridge introduced by Federal Premium in early 2022.
A muzzle brake is fitted on the end of the barrel which absorbs an estimated 50-60% of recoil. This is further supplemented by a buffered slide in the receiver. The Vidhwansak is equipped with an 8X magnification, long-eye-relief telescopic sight with parallax adjustment. A 12X ballistic scope can also be attached. [citation needed]
The effective length of the barrel (from breech to muzzle) is divided by the barrel diameter to give a dimensionless quantity. [2]: 81 For example, the main guns of the Iowa-class battleships can be referred to as 16"/50 caliber. They are 16 inches in diameter and the barrel is 800 inches long (16 × 50 = 800).
30 30 30 30 22 22 22 30 Barrel length, mm: 492 492 477 442 552 552 552 552 Weight without sights, kg, less: 3.2 See also. Klimovsk Specialized Ammunition Plant;
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The larger diameter, shorter 6 mm cartridge is optimized for these shorter barrel lengths, and would perform less efficiently from rifle-length barrels. The round's muzzle energy is 831 ft⋅lbf (1,127 J) versus 792 ft⋅lbf (1,074 J) for a 5.56 mm bullet, again from the same 10" standard barrel.
Caliber: 12 gauge: Action: Gas operated: Muzzle velocity: 403 m/s (1,325 ft/s) for 12 gauge, 2¾", 00 buckshot load 475 m/s (1,560 ft/s) for 12-gauge 437 grain rifled slug
Compared to the Pak 40 which had a 3.45 m (11 ft 4 in) L/46 caliber barrel, the Pak 50 had a shorter 2.24 m (7 ft 4 in) L/30 barrel. Available photographs of the Pak 50 show two different types of muzzle brake were used. One was a square three baffle design, while the other was a five baffle design. [1]