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1,250 feet-per-second (381 meters-per-second) ... In 1977 the United States Air Force solicited manufacturers for a 9mm Handgun to replace their Smith & Wesson Model ...
The imperial unit kilograin foot per second (kgr⋅ft/s). "Grain foot per second" (gr·ft/s) can be obtained by measuring the mass in grains (gr) (7,000 to the pound) and velocity in feet per second (ft/s), but since their product yields a very large number it is common to multiply by a factor of 1 ⁄ 1000, obtaining the power factor in kilo ...
Meaning, air density is the generally the same for flat-fire trajectories, thus sectional density is equal to the ballistic coefficient and air density can be dropped. Then as the velocity rises to Bashforth's k {\displaystyle k} for high velocity when C {\displaystyle C} requires the introduction of i {\displaystyle i} .
The Interceptor vest was tested to stop a 9×19mm 124-grain FMJ bullet at 1,400 feet per second (430 m/s) with minimal backface deformation, and it has a V-50 of roughly 1,525 feet per second (465 m/s). This means that the bullet in question must travel faster than 1,525 feet per second (465 m/s) for it to have more than a 50% chance of ...
The U.S. military standard requires (at a minimum) that ballistic eyewear can always withstand a 0.15 caliber, 5.8 grain, T37 shaped projectile at a velocity of 640 to 660 feet per second (approximately 3.8 mm 0.376 g at a velocity of 195 – 201 m/s).
MV: Muzzle velocity, in feet-per-second; ME: Muzzle energy, in foot-pounds; P: Momentum, in pound (force) (lbf) times seconds. [1] A guide to the recoil from the cartridge, and an indicator of bullet penetration potential. The .30-06 Springfield (at 2.064 lbf-s) is considered the upper limit for tolerable recoil for inexperienced rifle shooters ...
The VPAM scale as of 2009 runs from 1 to 14, with 1-5 being soft armor, and 6-14 being hard armor. [1] Tested armor must withstand three hits, spaced 120 mm (4.7 inches) apart, of the designated test threat with no more than 25 mm (0.98 inches) of back-face deformation in order to pass.
Not a lot of performance data is available for these bullets, although the 9mm offering was reputed to push a 100-grain (6.5 g) projectile at a velocity of 1,350 feet per second (410 m/s). [citation needed]