Define muzzle
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The problem with trying to apply energy to penetration and or effectiveness is that energy is a base unit or constant. Also, not only will the lead ball possess the same energy, but it will possess the same ability to penetration. The difference is throwing and shooting are artificial means of accelerating the lead ball where as dropping it is a natural means of accelerating it. Whether you drop 1 ounce lead ball, throw it or shoot it from a gun, if it has the same velocity it will have the same energy. The energy of a projectile is a calculation based in the acceleration of gravity here on earth, which is 9.80665 meters per second or 32.1739 feet per second. Projectile: monolithic solid type bullet weighing 300 grains with a muzzle velocity of 2900 feet per second. Muzzle energy = bullet mass x bullet velocity 2 / ( 2 x dimensional constant x 7000 ).įirearm: Weatherby Mark V chambered in. Projectile: monolithic solid type bullet weighing 19.5 grams with a muzzle velocity of 884 meters per second. Muzzle energy = ½ x bullet mass x bullet velocity 2 / 1000.įirearm: Weatherby Mark V chambered in. Here are the two formulas for a calculation of, or more correctly the measurement of muzzle energy. Muzzle energy is calculated by using the known velocity and weight of a projectile. 2.1 The difference between the Joule and Foot-pound force.