The three main class characteristics of all bullets are the lands and grooves, the caliber of the bullet, and the rifling twist. All three can be tied directly to the type of barrel that was used to fire the bullet.
The shock wave from a supersonic object is a cone composed of overlapping spherical wavefronts. As any one of these wavefronts forms, it propagates radially outward at speed c and acquires a radius ct.
The soft lead that allowed Minié balls to expand within the rifle barrel also caused them to flatten out and/or splinter when they hit a human target. A smoothbore's solid shot could break bones and tear through tissue, but soft lead bullets shattered bone and ripped tissue.
When rifle bullets exit the barrel of a gun, they typically have an initial speed (called the muzzle velocity) that ranges from about 2000 km/h (1200 mph or 550 m/s) up to about 4500 km/h (2800 mph or 1250 m/s).
When leaving the tube, the shock wave (with an initial shock speed in the tube of about 465 m/s, corresponding to a shock Mach number of 1.35) quickly attains a hemispherical shape and continues expanding at a velocity of ~370 m/s — slightly higher than the speed of sound (Figure 2).
Close to an explosion, a shock wave can travel at several times the speed of sound and reach pressures of ten or more atmospheres, producing devastating effects. Also, the "wind" that immediately follows a strong shock wave is brief but very intense.
Gold Flex is lighter than woven Kevlar, Twaron and other Ballistic material. According to the manufacturer, Gold Flex offers superior bulletproof protection.
According to the Guinness World Records, the machine gun in service with the highest rate of fire is the M134 Minigun. Designed in 1960s, this weapon spat fury from helicopters and armored vehicles. This 7.62mm calibre gun fired at a super fast pace of 6,000 rounds per minute i.e. 100 rounds per second.
Ammunition: One or more loaded cartridges consisting of a primed case, propellant, and projectile(s). Three main types are rimfire, centerfire, and shotshell.
Ammunition doesn't “expire” per se, but the gunpowder looses potency over time. The largest risk to shooting old ammunition isn't a failure to fire, it's the risk that you will actually fire the shot and it doesn't have enough momentum to make it out the barrel.
335 m/sThe slowest speed at 335 m/s, while the fastest travel at close to 427 m/s....Speed of a Bullet..22 rimfire cartridge1200–1500 fps.221 Fireball2650 fps3 more rows
Description. The velocity of the cartridge ranges from 2000 km/h (1200 mph or 550 m/s) up to about 4500 km/h (2800 mph or 1250 m/s).