The Definition of Casehardening
A heat-treating process that incorporates carbon into the surface molecular
structure of the steel, providing a hard-wearing surface without making the entire
receiver brittle. The parts to be casehardened are packed in a crucible with
carbon-rich media such as bone meal and charcoal, heated to bright orange, about
1800°F, then quenched in bubbling oil. Also
19 Other Firearms Definitions You Need To Know
An early form of complete, self-contained cartridge. It included bullet, powder and ignition primer, all in one package.
The primer was located towards the base of the cartridge, but completely internally. The pin, shaped like a little finishing nail,
pointed on the inside end and resting on the internal primer, projected radially about a quarter-inch to the outside of the base of
the cartridge. When loaded, a pinfire gun showed the tips of the pins exposed through small slots in the tops of the breech faces of the barrels.
To fire, hammers fell on the pins, driving them (through the wall of the cartridge) into the internal primer.
A material added to an explosive to slow its burning rate.
Something that will prevent or hinder something from happening.
Protective plates, usually of steel or horn, covering the top and bottom of a gunstock's butt only (the heel and the toe); leaving wood exposed in the center
The front sight is placed at the muzzle end of the barrel. It is often (but not always) in the form of a dot or a blade.
To attain a proper sight picture and shoot with the greatest degree of accuracy, the shooter's eye
should be focused sharply upon the front sight while shooting, allowing both the rear sight and the target to blur somewhat.
Co-Witness Sighting is the use of any iron sight mounted onto a rifle that is fitted with an optical sight as a primary sighting system.
They come in two basic configurations, fixed or flip-up. The idea is that if you align your red dot and your iron
sights you have a backup aiming system on the gun.
Any safety, internal or external, which functions apart from the shooter's conscious control. Grip safeties are one example of a passive external safety.
A screw with about half of its threading removed in longitudinal sections. Often used at the breech end of a
takedown firearm's barrel. When the barrel's interrupted female threads are inserted into the receiver's
complementary interrupted male threads, only a partial rotation is necessary for assembly rather than many full turns.
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#39;t hurt either.
A Moon Clip that hold enough rounds to load only a portion (usually half capacity) of a revolvers cylinder.
A chemical phosphate process developed during the second world war to provide an economical, durable and non-reflective surface finish to military firearms.
A metal cup placed on the end of a lead bullet to protect the lead against the hot gases of the burning powder charge.
Used in some types of firearms ammunition when non-jacketed bullets are used in high pressure cartridges, to prevent the buildup of lead in the barrel and aid in accuracy.
A catch built into the receiver of a break-open gun to keep the toplever in its extreme right position when the barrels are removed.
This device makes it slightly easier to remount the barrels. As the barrels are mounted and the breech closed,
the barrels contact some kind of release pin (marked with the arrow) and the toplever automatically returns
to the center locked position. Because, however, it requires a separate act to find and to depress this tiny
tab to re-center the toplever on a broken-down gun, this feature may be irritating when trying to put a gun away in its case.
An imaginary line which runs right down the center of the handgun's barrel and out though the back end of the gun.
A handgun may have a high bore axis, with the imaginary line running out into space well above the shooter's hand.
Or it may have a low bore axis, with the imaginary line running either straight through the shooter's hand or
just skimming the surface slightly above her hand. A high bore axis tends to create greater perceived recoil
and more muzzle flip when firing the gun than does a low bore axis.
A shooting position in which one or both knees are touching the ground, but the shooter is otherwise erect.
Slang for hearing protection. Applies to either muffs or plugs.
More commonly known as WCF, it is a family of centerfire cartridges designed by Winchester Repeating Arms Company
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
Also spelled Forend.
That part of the stock forward of the action and located below the barrel or barrels.
It is designed to give the shooter a place to hold the front end of the gun and protects the shooter's hand from getting burned on the hot barrel.