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Internal ballistics (also interior ballistics), a subfield of ballistics, is the study of the propulsion of a projectile. In guns, internal ballistics covers the time from the propellant 's ignition until the projectile exits the gun barrel. [1] The study of internal ballistics is important to designers and users of firearms of all types, from ...
Accurizing. Ruger 10/22 carbines, before accurizing (top) and after (below). Externally visible changes are the target-style stock, the more vertical thumbhole grip, the free-floated bull barrel, and a muzzle brake. Accurizing is the process of improving the accuracy and precision of a gun (firearm or airgun).
Like supplemental chambers, caliber conversion sleeves completely surround the new cartridge case, but cannot be ejected or fed from a magazine, so they only offer a single shot per barrel without manual extraction and reloading. The calibers supported by caliber conversion sleeves are limited by the difference between the calibers.
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.
Magazine (firearms) A staggered-column 9×19mm Browning Hi-Power pistol box magazine. The top image shows the magazine loaded and ready for use, while the lower image shows it unloaded and disassembled. Loading of small arms ammunition into a magazine. A magazine, often simply called a mag, is an ammunition storage and feeding device for a ...
Coach gun. A coach gun is a modern term, coined by gun collectors, for a double-barreled shotgun, generally with barrels from 18 to 24 inches (460 to 610 mm) in length, placed side-by-side. These weapons were known as "cut-down shotguns" or "messenger's guns" from the use of such shotguns on stagecoaches by shotgun messengers in the American ...
Choke (firearms) A choke is a tapered constriction of a firearm barrel at its muzzle end. Chokes are most commonly seen on shotguns, but are also used on some rifles, pistols, or even airguns. [1] Notably, some .22 LR match rifles have a constricted bore diameter near the muzzle. [citation needed] Chokes are almost always used with modern ...
A muzzle brake or recoil compensator is a device connected to, or a feature integral (ported barrel) to the construction of, the muzzle or barrel of a firearm or cannon that is intended to redirect a portion of propellant gases to counter recoil and unwanted muzzle rise. [ 1 ] Barrels with an integral muzzle brake are often said to be ported.