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As the bullet moves down the bore, however, the propellant's gas pressure behind it diminishes. Given a long enough barrel, there would eventually be a point at which friction between the bullet and the barrel, and air resistance, would equal the force of the gas pressure behind it, and from that point, the velocity of the bullet would decrease.
The Aguila SSS gives about 950 ft/s (290 m/s) velocity with a 60-gr bullet offering energy (163 Joules) equivalent to many high velocity .22 long rifle rounds using standard 40-gr bullets. Other heavy-bullet subsonic rounds perform similarly and are intended for hunting small game or controlling dangerous animals while avoiding excessive noise.
What velocity is imparted to the target (assume the bullet remains embedded in the target and thus practically loses all its velocity)? Let m b and v b stand for the mass and velocity of the bullet, the latter just before hitting the target, and let m t and v t stand for the mass and velocity of the target after being hit. Conservation of ...
For that reason the real maximum projectile velocity (Vmax) is higher than the real muzzle velocity (Vr). The external ballistics uses so-called initial velocity Vo, which is not the same as the real muzzle velocity. The initial velocity Vo is calculated via an extrapolation of the decaying part of velocity curve to the position of the muzzle (to).
The general formula for the kinetic energy is =, where v is the velocity of the bullet and m is the mass of the bullet. Although both mass and velocity contribute to the muzzle energy, the muzzle energy is proportional to the mass while proportional to the square of the velocity. The velocity of the bullet is a more important determinant of ...
Bullet parts: 1 metal jacket, 2 lead core, 3 steel penetrator. Terminal ballistics is a sub-field of ballistics concerned with the behavior and effects of a projectile when it hits and transfers its energy to a target. Bullet design (as well as the velocity of impact) largely determines the effectiveness of penetration. [1]
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For example, a shot mass of 10 kilograms (22 lb) with an offset of 0.1 mm and spin velocity of 500 cycles/sec will generate a force of 9870 N. [6] In another case assume that a non-straight barrel has a radius of curvature of 1000 m, which is a relatively straight barrel. If the shot mass is 10 kg and its velocity is 1000 m/s, the force ...