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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).
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 ...
In 1915, Stevens led the U.S. arms business in target and small game guns. [4] On May 28, 1915, New England Westinghouse, a division of Westinghouse Electric, purchased Stevens. New England Westinghouse was created specifically to fulfill a contract to produce 1.8 million Mosin-Nagant rifles for Czar Nicholas II of Russia for use in World War I ...
Iver Johnson was born in 1841 [2] in Nordfjord, Sogn og Fjordane county, Norway. [3] He was educated as a gunsmith in Bergen in 1857, and had a gun store in Oslo. Johnson emigrated from Norway to Worcester, Massachusetts, United States in 1863, and continued his work as a gunsmith by trade and an inventor in his spare time.
6-shot (.36/.44) or 5-shot (.56) The Colt New Model revolving rifles were early repeating rifles produced by the Colt's Manufacturing Company from 1855 until 1864. The design was essentially similar to revolver type pistols, with a rotating cylinder that held five or six rounds in a variety of calibers from .36 to .64 inches. [ 1 ]
Conventional eight groove rifling on the left, and octagonal polygonal rifling on the right. Polygonal rifling (/ p ə ˈ l ɪ ɡ ə n əl / pə-LIG-ə-nəl) is a type of gun barrel rifling where the traditional sharp-edged "lands and grooves" are replaced by less pronounced "hills and valleys", so the barrel bore has a polygonal (usually hexagonal or octagonal) cross-sectional profile.
The Model 69 was conceived as a lower-priced replacement with a longer 25 in (640 mm) barrel. The rifle was designed in 1934 by Winchester employee Frank F. Burton, [ 3 ] production was announced with the release of Winchester's new price list on 1 January 1935, and the first completed rifles were shipped in March of the same year.