The Definition of Squib
An underpowered powder charge, usually caused by a fault in cartridge loading, often insufficient to expel a projectile from the muzzle of a firearm.
If such a blockage is not cleared, the next attempted shot could cause the barrel at least to bulge, and very possibly to burst.
19 Other Firearms Definitions You Need To Know
A military person designated as a special marksman who is used to shoot designated targets of opportunity at long range.
A quad stack box magazine.
The opening through which the empty, spent ammunition case is ejected from of a firearm.
Slang for a shotgun which is set up specifically to fire a slug (a large, single projectile) rather than shot (multiple projectiles contained within a single shell).
The manner in which the sights are lined up properly in front of the shooter's eye, to form a straight path to the target.
Synonymous with pistol. A small, short-barreled firearm designed to be fired while held in one or both hands, possibly small enough to be concealed on the person, rather than while braced against the shoulder. The term includes antique dueling pistols, modern single-shot, semi-automatic pistols and revolvers.
A shotgun barrel that has a bore diameter increased beyond standard specifications, but less than the SAAMI maximum.
Done in an attempt to reduce felt recoil, improve patterning, or change the balance of the shotgun.
Generally refers to a .32 calibre or smaller firearm.
A device used to determine the range to a target. Many range finders work by bouncing a laser beam off the target or
nearby object and measuring the time for the reflection to arrive back at the instrument.
It is also possible to use various passive optical devices such as a mil-dot telescopic sight.
More commonly known as WCF, it is a family of centerfire cartridges designed by Winchester Repeating Arms Company
The vise-like device on a flintlock hammer used to hold the flint.
The length, within a rifled barrel, required to accomplish one full rotation. 1:12 Twist, means a bullet passing down the bore would complete one revolution in twelve inches.
1:7 Twist, means a bullet passing down the bore would complete one revolution in seven inches, which makes it a tighter twist than 1:12.
Different weights of bullet require appropriate rates of twist.
Skirted projectiles used in pellet guns
The mechanism of some firearms that holds the cartridge in place during the firing process.
It must be moved out of the way to load and unload the gun; this action may be manually performed
by the shooter pulling back on an exterior knob called the bolt handle and then sending it forward again, or the action may be performed
by other moving parts within the firearm. When the user must move the bolt manually, the firearm is called a bolt-action firearm.
The part of the gun that strikes either the firing pin or the round directly when the trigger is pulled then detonates the primer of the load and discharges the gun. Hammers may be external or internal. On a striker fired gun (a gun without a physical hammer) the firing pin is considered the hammer since it releases directly when the trigger is pulled.
Usually a telescopic firearm sight.
Dummy cartridges with spring-loaded "primers" used to test the mechanical functioning of a firearm, particularly the trigger
pulls, hammer-fall and ejector-timing of a break-open gun. It is not advisable to dry-fire a break-open gun on an empty chamber.
Hardened steel parts can shatter without the soft brass primer to act as a shock absorber. Snap caps cushion the blow of the hammer and
firing-pin when the use of a live cartridge would be impractical.
Ear muff or ear plug hearing protection that have internal electronics that amplify human voices while excluding all noises louder than a given decibel rating.
Electronic hearing protection is best used when shooting outdoors. When on an indoor range they have a tendency to pick up too much echo and other muffled sounds.
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