The Definition of Controlled Pair
Two shots fired in rapid succession. It is different from a double tap because in a controlled pair,
the second shot will be fired after the shooter has obtained a second sight picture,
whereas in a double tap both shots are fired based upon the initial sight picture alone.
19 Other Firearms Definitions You Need To Know
An imaginary straight line from the eye through the sights of a firearm to the target.
Abbreviation for Close Quarters Combat.
A self-loading firearm whose breechblock and barrel are not positively locked together, but which incorporates a mechanism which initially restricts the breechblock from moving when fired, delaying its opening.
A type of steel round shot fired from air rifles. The name originated from the size of steel balls used in a shotgun of the same size (.177 caliber). In a 12 guage shotgun shell using BB size shot, there will be typically 90 BBs in a shell
A rifle or carbine with a one-piece stock extending to the muzzle. Sometimes called a Mannlicher stock,
although such a term is confusing because Mannlicher Schoenauer rifles are built with both full and half stocks.
Traditional in Europe for close-range woodland hunting, but not noted for extreme, long-range accuracy.
The bevelled portion of the rifling at the rear end of the barrel (and the forward portion of the chamber) where the bullet first engages the lands.
Front, metal, part of a handgun's grip, which together with the backstrap, provides a mounting frame for the grip panels.
The superheated air created by burning powder. A gas-operated firearm is one that uses the energy from these superheated gases to work the action in semi-automatic and automatic guns.
A unit of measure traditionally used for black powder shotgun charges. Today, used for smokeless powders on the basis of the new propellant's
equivalent performance to that weight of black powder. Thus, a shotgun shell marked 3 - 1 1/8
would be loaded with the smokeless powder equivalent of 3 drams of black powder, and with 1 ounce of shot. 1 Dram = 1/16 ounce = 437.5 grains.
A metal surface which contains a pattern of ridges or beads.
The relationship between a bullet's weight and its diameter. A long bullet, such as the original 7.62x54R
loading for the Mosin Nagant 91/30, will have a high sectional density and consequently greater
penetration than a shorter bullet of similar construction. A shorter bullet with less sectional
density will have relatively less penetration, but greater knockdown power.
A mark within a border, typically
stamped into the wood, especially of an American military rifle. It shows the
initials of the name of the accepting inspector and often, the date he accepted
the firearm into service.
A set of holes in a target left by a succession of bullets fired from the same rifle or handgun,
using the same ammunition and sight setting. Fired (within the limits of one's marksmanship ability)
to determine the inherent accuracy of the rifle/ammunition combination,
and to aid in the proper adjustment of the sights.
The area of a gun range where firearms are pointed when they are fired. The area of the range forward of the firing line.
An extra-deep magazine typical of large calibre rifles for dangerous game. The line of the underside of the wrist does not carry straight forward as with ordinary rifles.
Rather the rear of the magazine aligns more towards the center of the forward edge of the triggerguard,
typically allowing at least one extra cartridge to be carried.
A type of firearm action which uses a lever located around the trigger guard area,
(often including the trigger guard itself) to load fresh cartridges into the chamber of the barrel when the lever is worked.
Usually a telescopic firearm sight.
An opening. The ejection port is the opening in the side of a semi-auto from which spent cases are ejected.
The chemical propellant which is burned to produce the hot gases which send the projectile flying downrange.
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