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
The tapered rear end of a bullet. This design is used to increase ballistic efficiency at long range.
Refers to a visible dark ring created by the primers in centerfire ammunition around the firing pin hole in the frame after much use.
A type of internal hammer side by side shotgun boxlock action.
It was patented in 1875 and is the essence of simplicity utilizing only two springs and three moving parts (per barrel).
One of the most successful action designs ever, and still produced to this day by most SxS shotgun manufacturers.
The farthest distance that a target of a given size can be hit without holding over or under with the sights.
The exact range is determined by the performance of the cartridge used, the ZERO range, and the accepted size of the target area.
This term is not to be confused with point blank shooting.
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.
The departure of a bullet or shot charge from the normal line of flight. This can be caused by wind or the unbalanced spinning of the bullet.
Abbreviation for Concealed Carry Permit.
A middle position for an external hammer that effectively provides a safety function. With a firearm with non-rebounding hammers,
when on half-cock, the firing pin will not rest on the firing-pin.
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 counter bore in the center of the base of a centerfire cartridge casing in which the primer assembly is seated.
Also known as peep sights, range from the ghost ring sight, whose thin ring blurs to near invisibility (hence ghost), to target aperture sights that use large disks or other occluders with pinhole-sized apertures. In general, the thicker the ring, the more precise the sight, and the thinner the ring, the faster the sight.
An unexpected delay between the triggering of a firearm and the ignition of the propellant.
This failure was common in firearm actions that relied on open primer pans, due to the poor or inconsistent quality of the powder.
Modern weapons are susceptible, particularly if the ammunition has been stored in an environment outside of the design specifications.
Reloaded ammunition may also be the cause if not reloaded properly
Improper term for a device that cuts down on the noise a firearm makes when it is shot. The correct term is suppressor. Silencers only exist in the movies.
Unloading a gun and double checking that it is unloaded or fixing a malfunction so that the gun is ready to fire again.
Markings impressed into the base of a cartridge case, normally identifying the maker's name, the cartridge calibre designation, and sometimes the date.
A two-barreled, side-by-side, shoulder-fired gun having one
smoothbore shotgun barrel and one rifled barrel.
The degree to which the barrel(s) of a break-open gun drop down; the size of the opening space,
which should be sufficient to allow for ease of loading, unloading and properly-functioning ejection.
A good gape is easier to achieve on a side-by-side than an over & under where the bottom barrel is well-enclosed by the action body.
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.
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