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
In a shotgun barrel, A tapered area a few inches from the breech end, providing a transition between the chamber
(approximately the diameter of the outside of a shotgun shell) to the bore proper (approximately the diameter of the inside of a shotgun shell).
The forcing cone provides the transition between the exterior and the interior diameters of the cartridge.
Older shotguns usually have more abrupt forcing cones suitable for then-current thick-walled paper shells with fibre wads.
Newer shotguns usually have more gradual, longer forcing cones suitable for thinner modern plastic shells with obturating plastic shot-cup wads.
A second sear, poised just behind a second notch in the hammer. It is possible that when a cocked firearm is dropped or sharply jarred, a
single sear could jump out of its notch and the hammer could fall, firing the gun accidentally. In this event, an intercepting sear
would engage before the hammer could fall completely, preventing an accidental discharge. On a gun with intercepting sears, only
by pulling the trigger are both sears moved out of the way simultaneously, allowing the gun to fire.
Intercepting sears are usually found on better sidelock actions. They are sometimes found on best boxlocks,
and can be recognized by an extra screw behind the action fences, in addition to the usual two screws (or pins) along the lower rear of the receiver.
The common part of a handgun to which the action, barrel and grip are connected.
A bolt action which is locked by pressing the bolt handle in and down, thereby turning its locking lugs into the receiver.
The part of a flintlock action that receives the blow of the flint-tipped hammer, which then yields tiny molten fragments of steel
,sparks, which fall into the flashpan, igniting the priming charge and thence, through the touchhole, the main charge.
By convention, powerfully loaded shotgun cartridges for hunting are generally manufactured with relatively longer brass end-caps than lower
powered cartridges intended for target shooting. While different-sized brass bases are of virtually no consequence to the strength of the
shell in relation to the steel breech of the gun itself, they do help the shooter identify the relative power of cartridges at a glance.
The unalienable right of all of the people, stated in the Second Article of The Bill of Rights, to possess and use personally owned firearms for sport, recreation, personal protection, and the defense of the nation.
Abbreviation for 'Back Up Gun'
A Moon Clip that hold enough rounds to load only a portion (usually half capacity) of a revolvers cylinder.
The unplanned discharge of a firearm caused by a failure to observe the basic safety rules, not a mechanical failure of the gun.
A description of a bullet whose forward diameter has expanded after penetration.
The frequency at which a firearm can fire its projectiles.
American name for the German "Parabellum" semiautomatic pistol introduced in 1900.
The Parabellum was designed by Georg Luger, and based on the earlier Borchardt pistol.
The official German military nomenclature was "Pistole '08" or "Po8." At first, it was chambered for the 7.65mm Parabellum round.
Soon, it was modified to use the 9mm Parabellum cartridge, which is what most people refer to today when talking about a 9mm cartridge.
"Luger" is now a trademark owned by the Stoeger Arms Co.
The chemical propellant which is burned to produce the hot gases which send the projectile flying downrange.
Firearms designed to be carried and used by an individual or individuals.
Originally, live pigeons were used as targets, but they were gradually replaced with clay disks and ultimately banned. Later clay has been replaced with more suitable raw materials.
A shooting sport that combines both skiing and rifle shooting. It is the only shooting activity in the Winter Olympics.
There is also a summer biathlon which involves running and shooting but it is not yet an Olympic event.
A malfunction in which the spent case fails to eject from a semi-automatic firearm and blocks the chamber.
As the fresh round is brought forward it cannot enter the chamber. It is cleared by
stripping the magazine from the gun, racking the slide several times to eject the spent case, and then reloading.
Checkering, applied to the otherwise-unfinished butt end of a gunstock.
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