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
A type of expanding bullet with a concavity in its nose to increase expansion on penetration of a solid target.
Some hollow-point's are also designed to fragment as they expand. They are least likely to
over-penetrate the target and harm an innocent bystander. Commonly used for self-defense.
Commonly shortened to mag pouch, this is a device to hold extra magazines which fastens to the shooter's belt.
A type of iron sights that glow or shine in the dark, intended for use in low light conditions. Some night sights consist of tiny tubes of tritium, while others use a phosphorus paint.
Although a misused term (even within the firearms industry), Long Colt is a designation for an ammunition cartrige developed by Colt mainly used for revolvers. The actual designation is Colt instead of Long Colt.
The term Long Colt was originally coined to avoid confusion between the .45 Colt and .45 ACP cartridges
A musket shortened for cavalry use.
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.
A swing-out arm on a revolver, to which the cylinder is
mounted when opened facilitates loading and cleaning.
Any gun that can be used in a sport.
Originally used to describe the spherical projectile used in black powder firearms,
now also used to refer to a fully jacketed bullet of cylindrical profile capped with a round nose
The part of a revolver's frame connecting the recoil shield to the barrel-mounting recess; adding considerable strength compared to that
of early black powder Colt revolvers, and providing a base for a rear sight.
Holding the trigger to the rear after the shot has fired, until the sights are back on target, at which time the trigger is released.
A device fitted inside the buttstock of a heavily-recoiling gun or rifle, usually containing mercury and a valve.
As the gun recoils, the mercury is displaced temporarily, increasing the duration, and thus diminishing the
perceived impact of the recoil. The added half-pound of weight doesn't hurt either.
A common type of iron sights in which the rear sight is an open-topped U or a V or a square-notch shape and with a
blade type front sight, in contrast to the closed circle commonly found in aperture sights.
The point where the projectile from a firearm hits.
An imaginary straight line from the eye through the sights of a firearm to the target.
A measure of projectiles ability to overcome air resistance in flight.
It is inversely proportional to the deceleration—a high number indicates a low deceleration.
Ballistic Coefficient (abbreviated as BC) is a function of mass, diameter, and drag coefficient. In bullets it refers to the amount that drop over distance and wind drift will affect the bullet.
The term referring to the action of manually drawing the hammer back against its spring until it becomes latched against the sear,
or sometimes the trigger itself, arming the hammer to be released by a subsequent pull of the trigger. Some external hammers, and all internal hammers,
may be cocked simply by pulling the trigger