The Definition of Polygonal Rifling
A type of gun barrel rifling where the traditional lands and grooves are replaced by "hills and valleys" in a rounded polygonal pattern, usually a hexagon or octagon.
Polygons with a larger number of edges provide a better gas seal in relatively large diameter polygonally rifled bores.
19 Other Firearms Definitions You Need To Know
A charge of powder, a projectile or a cartridge. Also, to prepare a gun for firing by inserting ammunition into it.
A deluxe set of several different associated weapons, being any combination of rifle, shotgun, various handguns, and possibly a knife or two, cased together with appropriate cleaning and loading tools.
A fouling shot is a shot fired through a clean bore, intended to leave some residue of firing and prepare the bore for more consistent performance in subsequent shots.
The first shot through a clean bore will behave differently from subsequent shots through a bore with traces of powder residue, resulting in a different point of impact.
The Soviet Union's standard military and police side arm from 1951 to 1991 replacing the Tokarev TT-33 semi-automatic pistol and the Nagant M1895 revolver.
Designed by Nikolay Fyodorovich Makarov, it is a blowback operated semiautomatic pistol which fires the 9x18mm Makarov cartridge, and holds 8 rounds in the magazine.
A shotgun with two barrels, usually of the same gauge or bore.
The two types of double-barreled shotguns are over/under (abbreviated as O/U or OU),
in which the two barrels are stacked on top of each other, and side-by-side (abbreviated as SxS),
in which the two barrels sit beside each other. See photo at right for example of side-by-side double-barreled shotgun.
For double-barreled guns that use one shotgun barrel and one rifle barrel, see combination gun.
A small metal tube extending through the breech of a percussion firearm through which the flame passes from the percussion cap to fire the powder charge.
To pull the trigger and release the hammer of a firearm without having a cartridge in the chamber.
To jerk a firearm off target inadvertently in the instant of firing in timid anticipation of recoil. Commonly caused by learning to shoot with a gun more powerful then they are ready for.
A smooth, sometimes contoured plate, within a magazine, at the top of a spring, across which cartridges slide when being loaded into a chamber.
A pair of slender and easily-carried wooden dowels or sticks, which when held, crossed, in the fingers of the left hand while also supporting the forend of a rifle,
usually shooting offhand, provides somewhat enhanced stability for a more accurate shot.
A trigger that requires a lot of pressure to pull it past the break point.
Rifles tend to have considerably lighter triggers than handguns, and even a heavy rifle trigger is often lighter than a light handgun trigger.
A unit of adjustment for a sight.
A trigger that can be easily adjusted by the user. Adjustable triggers are common on specialized target-shooting firearms.
Not putting your finger on the trigger until your sights are on target, then pulling the trigger smoothly, and following through by realigning the sights before allowing your finger to come off the trigger.
A phenomenon which is often grouped with hammer bite. In this case the web of the shooting hand is cut or abraded by
the rearward motion of the semi-automatic pistol's slide, not by the gun's hammer.
This most often occurs with small pistols like the Walther PPK and Walther TPH that have an abbreviated grip tang.
This problem is exacerbated by the sharp machining found on many firearms.
Slang word for short barreled revolver.
The entire collection of moving parts which work together to fire the gun when the trigger is pulled.
It may include trigger springs, return springs, the trigger itself, the sear, disconnectors, and other parts.
The first shot from a rifle that has been cleaned, and not fired recently may go to a different point of impact, for the same point of aim than a rifle that has been fired recently.
This first shot is referred to as a shot from a cold, clean, bore.
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