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The SS195LF is a commercially available cartridge that features a lead-free primer and produces ballistics similar to the SS192 round, which it replaced in late 2004. [59] It uses the same 1.8-g (28 grain) copper-jacketed aluminum core bullet as the SS192, and it can be identified by the unmarked, hollow void at the tip and the silver-colored ...
The .22 Spitfire is an American wildcat rifle cartridge developed by Col. Melvin M. Johnson.It was originally named the MMJ 5.7mm [1] by its designer and is also known in the U.S. as the 5.7mm Johnson, the Johnson MMJ 5.7mm Spitfire, and the .22 Johnson, (or 5.7×33mm internationally).
Cartridge: FN 5.7×28mm [8]: Action: Delayed blowback [8]: Rate of fire: Semi-automatic [8]: Muzzle velocity: 762 m/s (2,500 ft/s) (SS198) [10]625 m/s (2,050 ft/s ...
Another attempt at building a ballistic calculator is the model presented in 1980 by Dr. Arthur J. Pejsa. [18] Dr. Pejsa claims on his website that his method was consistently capable of predicting (supersonic) rifle bullet trajectories within 2.5 mm (0.1 in) and bullet velocities within 0.3 m/s (1 ft/s) out to 914 m (1,000 yd) in theory. [ 19 ]
The Ruger-5.7 was introduced in December 2019 to be a more affordable alternative 5.7x28mm semi-automatic pistol compared to the FN Five-seven pistol (which had been the only other 5.7x28 pistol available to the civilian market for over 20 years). [5]
The gun uses a smooth single-action striker-fired trigger mechanism. [2]The frame is made out of polymer, [6] the slide and barrel are made out of 416 stainless steel [7] and the magazine is made out of black oxide alloy steel. [8]
A pace is a unit of length consisting either of one normal walking step (approximately 0.75 metres or 30 inches), or of a double step, returning to the same foot (approximately 1.5 metres or 60 inches). The normal pace length decreases with age and some health conditions. [1]
Miles per hour (mph, m.p.h., MPH, or mi/h) is a British imperial and United States customary unit of speed expressing the number of miles travelled in one hour. It is used in the United Kingdom , the United States , and a number of smaller countries, most of which are UK or US territories, or have close historical ties with the UK or US.