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In ballistics, the ballistic coefficient (BC, C b) of a body is a measure of its ability to overcome air resistance in flight. [1] It is inversely proportional to the negative acceleration: a high number indicates a low negative acceleration—the drag on the body is small in proportion to its mass.
According to Nammo, a Finnish-Norwegian ammunition producer, the 5.56×45mm NATO M995 armour piercing cartridge can penetrate up to 12 mm (0.47 in) of RHA steel at 100 meters. [35] The US Army's Ballistic Research Laboratory measured a ballistic coefficient (G7 BC) of 0.151 and form factor (G7 i) of 1.172 for the SS109/M855 ball projectile. [36]
Most VLD bullets are used in rifles. VLD bullets typically have a ballistic coefficient greater than 0.5, although the threshold is undefined. [1] Bullets with a lower drag coefficient decelerate less rapidly. A low drag coefficient flattens the projectile's trajectory and also markedly decreases the lateral drift caused by crosswinds. The ...
Ballistic coefficient (BC): A measure of a projectile's ability to overcome air resistance in flight. It is inversely proportional to the deceleration – a high number indicates a low deceleration. BC is a function of mass, diameter, and drag coefficient.
The 6.5mm Creedmoor is known for its exceptional accuracy and long-range performance. According to Gunners' Review, this ammunition is often regarded as a secret weapon for precision shooters due to its impressive ballistic properties. [11] The 6.5mm Creedmoor is a medium-power cartridge comparable to the .260 Remington [12] and 6.5×47mm Lapua ...
It uses a 175-grain (11.3 g) Sierra Match King hollow point boat-tail bullet with a ballistic coefficient (G7 BC) of 0.243. [94] Produced at Lake City Army Ammunition Plant. The propellant's noticeable muzzle flash and temperature sensitivity led to the development of the MK 316 MOD 0 for special operations use.
External ballistics is the part of the science of ballistics that deals with the behaviour of a non-powered projectile in flight. External ballistics is frequently associated with firearms , and deals with the unpowered free-flight phase of the bullet after it exits the gun barrel and before it hits the target, so it lies between transitional ...
External ballistics or exterior ballistics is the part of ballistics that deals with the behavior of a projectile in flight. The projectile may be powered or un-powered, guided or unguided, spin or fin stabilized, flying through an atmosphere or in the vacuum of space, but most certainly flying under the influence of a gravitational field.