Search results
Results from the WOW.Com Content Network
A rifle is a firearm designed to be fired from the shoulder, with a barrel that has a helical groove or pattern of grooves ("rifling") cut into the barrel walls.The raised areas of the rifling are called "lands," which make contact with the projectile (for small arms usage, called a bullet), imparting spin around an axis corresponding to the orientation of the weapon.
Rifling of a 105 mm Royal Ordnance L7 tank gun Conventional rifling of a 90 mm M75 cannon (production year 1891, Austria-Hungary) Rifling in a GAU-8 autocannon. Rifling is the term for helical grooves machined into the internal surface of a firearms's barrel for imparting a spin to a projectile to improve its aerodynamic stability and accuracy.
The Magnum Rifle was originally offered in .264 Winchester Magnum, and .300 Winchester Magnum. [6] In 1967 the 7 mm Remington Magnum was added to the available chamberings. In 1969 the 7mm Remington Magnum was dropped from production. In 1970 the Magnum Rifle was dropped from the Model 670 lineup entirely.
The maximum practical range [note 4] of all small arms and especially high-powered sniper rifles depends mainly on the aerodynamic or ballistic efficiency of the spin stabilised projectiles used. Long-range shooters must also collect relevant information to calculate elevation and windage corrections to be able to achieve first shot strikes at ...
In theory, Mr. Möller calculated that a typical .375 CheyTac chambered gun, shooting his now defunct 26.44 gram (408 gr) .375 Viking bullets (claimed G1 BC = 1.537) at 870 m/s (2854 ft/s) muzzle velocity, would have a supersonic range of 3,090 m (3,380 yd) under International Standard Atmosphere sea level conditions (air density ρ = 1.225 kg ...
The Model 0000 rifle and Model 6000 carbine use a slower 305 mm (1:12 in) twist rate for the shorter and lighter American M193 bullet. Fabrique Nationale also offers semi-automatic-only Law Enforcement carbine versions: [citation needed] the Model 7030 with a 178 mm (1:7 in) rifling twist and the Model 6040 with a 305 mm (1:12 in) twist rate ...
Firearm muzzle velocities range from approximately 120 m/s (390 ft/s) to 370 m/s (1,200 ft/s) in black powder muskets, [3] to more than 1,200 m/s (3,900 ft/s) [4] in modern rifles with high-velocity cartridges such as the .220 Swift and .204 Ruger, all the way to 1,700 m/s (5,600 ft/s) [5] for tank guns firing kinetic energy penetrator ammunition.
The AWM in the .338 Lapua Magnum (8.6×70mm) calibre was designed as a dedicated long range sniper rifle. The rifle is fitted with a stainless steel, fluted, 686 mm (27.0 in) barrel, which research has found to be the best compromise between muzzle velocity, weight, and length.