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These weapons are used in conjunction with special sub-caliber ammunition where the projectile is fitted with soft-metal flanges which fills out the caliber. [1] As the projectile travels through the squeeze bore the flanges fold inwards, resulting in a reduced caliber round with an increased velocity compared to a traditional full-caliber ...
A ballistic chronograph or gun chronograph is a measuring instrument used to measure the velocity of a projectile in flight, typically fired from a gun or other firearm.The instrument is often useful for tasks such as gauging the utility of a firearm or safety of non-lethal projectiles fired from items such as a paintball gun or BB gun.
The 90 mm gun M1/M2/M3 was an American heavy anti-aircraft and anti-tank gun, playing a role similar to the German 8.8cm Flak 18.It had a 3.5 in (90 mm) diameter bore, and a 50 caliber barrel, giving it a length of 15 ft (4.6 m).
The confusion occurs due to Baker's common reference to the projectile fired from the firearm weighing 'half a pound', which would if a round ball equate to a 2 bore by definition. However Baker himself never refers to this projectile being a round ball nor uses the term 2 bore in any of his writings, indicating this half pound shell was a ...
The Mk X continued the trend of lengthening gun barrels as far as new construction methods would permit, in order to allow more cordite propellant to be used to attain higher projectile velocities. The Mk X increased the bore length from the Mk IX 's 480 to 540 in (12 to 14 metres), increasing muzzle velocity from 2,600 to 2,700 ft/s (790 to ...
The Barrett XM109, originally known as the Objective Sniper Weapon (OSW) and now called the Anti-Materiel Payload Rifle (AMPR), is a prototype anti-materiel sniper rifle.It is chambered for 25 × 59 mm grenade rounds and was developed by Barrett Firearms Manufacturing.
The EXACTO program completed another round of live-fire tests in February 2015. In the tests, an experienced shooter used the guided rounds to track and hit a moving target several times. Video showed the bullets maneuvering in-flight to achieve hits. Additionally, an inexperienced shooter used the system and was still able to hit the moving ...
When first recommended for adoption, M1 Garand rifles were chambered for the .276 Pedersen, which held ten rounds in its unique en-bloc clips. [1] The .276 Pedersen was a shorter, lighter and lower pressure round than the .30-06, which made the design of an autoloading rifle easier than the long, powerful .30-06.