Letter Z Firearms Glossary
A firearm is said to be "zeroed in" when its sights have been adjusted so that the bullet will hit the center of the target
when the sights are properly aligned upon the center of the target. The farthest distance from a firearm at which the bullet's path and the point of aim coincide.
This term is also used to mean the process of insuring that the sights of a firearm are properly aligned so that where they
indicate the bullet will strike is in fact where it strikes.
The act of setting up a telescopic or other sighting system so that the point of impact of a bullet matches the sights at a specified distance.
18 Other Firearms Definitions You Need To Know
The small lever on a cartridge firearm, which one pulls to cause the spring-loaded firing pin to impact the primer, causing the gun to discharge.
Normally, the trigger simply connects to the sear. Pulling the trigger moves the sear out of its notch, releasing the spring-loaded hammer
to strike the firing pin which in turn strikes the primer; or the coilspring-loaded firing pin directly. Other, often-Germanic systems have their own
miniature lockwork which, when cocked, allows an exceedingly light trigger pull to discharge the firearm, a setting that would be perilous to carry in the field.
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 type of firearm in which the action is closed, with a cartridge in the chamber prior to firing. When the trigger is pressed the cartridge is fired,
and the action cycles loading another cartridge into chamber and when firing is stopped the bolt remains closed and the chamber remains loaded.
The area inside the bore nearest to the muzzle.
A type of shotgun ammunition which uses very small pellets with individual projectiles of less than .24" in diameter
designed to be discharged in quantity from the shotgun. The size of the shot is given as a number or letter--
with the larger number the smaller the shot size. It is so named because it is most often used for hunting birds.
The finest size generally used is #9 which is approximately .08" in diameter and the largest common size is #2 which is approximately .15"
A black powder muzzleloading firearm action which relies upon a serpentine or S-shaped piece of metal to hold a smoldering match.
By pressing the lower end of the serpentine,
the upper end holding the burning match contacts the priming powder in the pan.
The propellant powder used in modern ammunition. It is not an explosive, but rather a flammable solid that burns extremely rapidly releasing a
large volume of gas. Commonly called "gunpowder" and usually made from nitrocellulose, or nitrocellulose and nitroglycerin.
It is classified as a "Flammable Solid" by the Department of Transportation.
A semi-automatic firearm malfunction in which the slide passes entirely over the fresh round, failing to pick it up to insert into the chamber as the slide returns to battery.
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
A specialized, highly accurate rifle, fitted with an optical sight used by military snipers to engage personnel and hard targets at long range.
A fully automatic firearm that rapidly fires multiple rifle-caliber shots with a single pull of the trigger.
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 handgun or rifle shooting sport in which the competitors attempt to knock over metallic game-shaped targets at various ranges.
A round of ammunition that does not fire.
The earliest type of gun, now also popular as modern-made replicas, in which blackpowder and projectile(s) are
separately loaded in through the muzzle. The term is often applied to cap-and-ball revolvers where the loading is
done not actually through the muzzle but through the open ends of the cylinder's chambers.
Generally refers to the stock and fore-end of a rifle. Can sometimes also be applied to any detachable accessories like a flashlight.
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