T - 95 matching terms
A patented reciprocation and locking system for use on a rimfire rifle. Sometimes used to describe straight-pull bolt action rifles with a horizontally protruding straight bolt handle.
To disassemble a firearm for cleaning, repair or transportation. Also called Stripping.
A type of firearm designed for ease of disassembly and transportation
A rearward projecting tongue on a receiver or frame to which the buttstock is attached. Some parts of the operating mechanism of a firearm may also pass through the tang. A gun may have either or both an upper and lower tang.
See Safety, Tang.
See Screw, Tang.
See Sight, Tang.
A tabulation of values relating to the compressed length of a crusher cylinder to the chamber pressure.
See Hammer, Target.
Any rifle designed and equipped for match or target shooting.
The act of shooting at inanimate objects. “formal” target shooting is done at specified distances at targets designated for scoring. “Informal” target shooting is done at varying distances at impromptu targets for practice. (See “Plinking”).
A special form of strap to aid target shooting.
See Trigger, Target.
The act of shooting a firearm to align sights. See also “Sighting In.”
A circular, domed, frangible disc used as an aerial target for shotgun shooting games. Originally formed out of clay, modern “clay” targets are generally made from a formulation of pitch and limestone. Dimensions and weights are regulated by skeet and trap shooter’s associations. Also called Clay Bird or Clay Pigeon.
See Sight, Telescope (Telescopic).
See Mount, Telescope.
TEMPERATURE OF IGNITION
The lowest temperature to which the surface of material must be raised for the combustion of the material to become self-sustaining.
1. On firearms, it is the projecting part of wood components which fit into the receiver or frame.2. On ammunition, that portion of the rimfire bullet which fits into the cartridge case, from bullet base to bottom of band. Also called Heel.
See Velocity, Terminal.
See Load, Brush.
See Leade (Lead).
See Feed Throat.
THUMB PIECE (CYLINDER RELEASE)
A latch used on some revolvers to release the cylinder. Sometimes called a “thumb latch”.
A ledge in the grip area of a rifle or handgun on which to rest the thumb of the trigger hand.
See Safety, Thumb.
See Stock, Thumbhole.
TIME OF FLIGHT
The total elapsed time that a projectile requires to travel a specific distance from the muzzle.
See Bullet Tipping.
The bottom (lower) end of a buttplate and adjacent portion of the stock on a shoulder firearm.
An unmounted, portable handloading tool using a “nutcracker” or plier action for handloading centerfire cartridges. Also called Nutcracker Tool.
A projection which extends behind the breech end of the barrels on some breakopen firearms. When the gun is closed, it fits into a corresponding recess slot in the frame and is used for locking purposes.
That portion of a revolver frame which passes over the cylinder.
The term used for any firearm on which the barrel or barrels are allowed to tip down at the muzzle (up at the breech) exposing the chamber or chambers for loading or unloading.
The curved path of a projectile from muzzle to target.
A computed table describing the downrange trajectory of a projectile or of shotshell pellets, buckshot or rifled slugs.
A relative term for minimal arching in the flight of a projectile. Generally, the faster the speed of the projectile, the flatter it’s trajectory.
The distance, measured in inches, that a projectile travels above the line of sight at a specific point in the trajectory that is half the distance between the firearm and a target.
TRAJECTORY, ORIGIN OF
When a bullet exits from the barrel of a firearm, the location of the center of the bore at that specific point in time is called the origin of the trajectory.
TRANSDUCER, PIEZOELECTRIC PRESSURE
A device which generates an electrical charge that is proportional to the pressure applied to its crystal element.
A clay target throwing device.
See Gun, Trap.
A shotgun target sport in which clay targets are thrown away from the shooters by a reciprocating trap located forward of the firing line.
An electro-mechanical device for throwing clay targets.
A small, hand-operated target throwing device.
A mechanically operated clay target throwing device.
A type of buttplate with a hinged closure plate in the butt-end of a firearm. Opening of the trap door exposes a recess in the stock which can be used for storage.
That part of a firearm’s mechanism which is movable by the finger to cause the firearm to discharge.
A connecting piece between the trigger and the sear.
The sensible movement of the trigger or take-up or pretravel, prior to sear release.
A rigid loop which partially surrounds the trigger to reduce the possibility of accidental discharge.
1. An accessory for blocking unauthorized trigger movement during gun storage. Must never be applied to a loaded firearm.2. A form of firearm safety blocking trigger movement
Those parts which, when pressure is applied to the trigger, release the hammer or striker. Also called Fire-Control.
TRIGGER PLATE (ASSEMBLY)
1. A metal plate fitted to the lower part of some frames through which the trigger or triggers pass.2. A component attached to the frame or receiver of some firearms, which supports the major components of the firing mechanism and may have the trigger guard as an integral portion.
The average force which must be applied to the trigger of a firearm to cause sear or hammer release with the force applied approximately parallel to the bore line.
TRIGGER PULL SCALE
A device for measuring trigger release force.
An accessory which is attached to the trigger to give a much larger trigger-finger bearing surface.
A gradual increase of pressure on a trigger until it releases.
1. A device to prevent certain firearms from being fired until the finger lever is closed.2. A device to prevent over-travel of the trigger.
Any trigger mechanism which has features that can be adjusted.
A trigger that releases without sensible movement.
A term used for firearms having two barrels and a separate trigger for the discharge of each. This term does not apply to firearms with double set triggers.
TRIGGER, DOUBLE PULL (2 STAGE)
A trigger which has two distinctive pull characteristics. The first or take-up stage is usually long and light in pull force; the second stage having a short but distinct increase in the pull force required to discharge the firearm.
TRIGGER, DOUBLE SET
An arrangement of two triggers in which the actuation of one trigger presets the second resulting in a light trigger pull of the latter.
A slang term for a trigger requiring very low force to actuate. Sometimes used to describe the light pull of a second trigger in a double set trigger mechanism.
TRIGGER, HINGED OR FOLDING
A trigger which is hinged to fold forward.
The term used for firearms having two barrels and a single trigger wherein the inertia resulting from the recoil forces of firing one barrel causes the trigger sear to switch to the unfired barrel. A second pull of the trigger can then fire the second barrel.
TRIGGER, NON-SELECTIVE SINGLE
A single trigger on double-barrel guns which fires the barrels in a fixed sequence.
An unconventional mechanism generally found only in some trap shotguns in which the firearm is fired by the release of, rather than the pull of, the trigger.
TRIGGER, SELECTIVE SINGLE
An arrangement on double-barrel firearms having a single trigger which enables the shooter to choose the barrel he wishes to fire first. The mechanism will then subsequently switch to the unfired barrel, which a second pull of the trigger can then fire.
A trigger having longitudinal grooves on its face.
Either a single or double trigger arrangement on which the required trigger pull force can be made very light by means of “setting” mechanism. May be either Double Set trigger or Single Set trigger.
A trigger which has a minimum projection from the action and is not usually surrounded by a trigger guard. Also called Spur Trigger.
A trigger mechanism for multiple barrel firearms wherein repeated pulls of one trigger fires the barrels successively.
TRIGGER, SINGLE STAGE
1. A trigger mechanism in which the trigger travel is relatively short and there is no significant sensible change in pull force from the beginning of movement up to the point of firing.2. A trigger which releases with a single pull.
See Trigger, Sheath.
A button-type trigger, the end of which is pressed to fire the firearm.
1. A trigger mechanism which provides for adjustment of such characteristics as pull force, travel or overtravel.2. A trigger which provides a large bearing surface for the trigger finger.3. A relatively light, crisp trigger designed to assist in accurate shooting.
A double trigger arrangement used on some double-barrel firearms, wherein one or both triggers will, with each pull, fire the barrels sequentially. They are non-selective.
A type of trigger mechanism found on some double-barrel or over-under shotguns consisting of two triggers. The front trigger functions as a conventional non-selective single trigger, while the rear trigger will fire only the barrel with the tighter choke.
A part of the mechanism of some firearms which is released by the action of the trigger.
See Bullet, Truncated.
A shoulder firearm having a stock which is fully adjustable for length of pull; drop at comb, Monte Carlo and heel; pitch and cast. It is used for fitting of custom made firearms to a specific shooter’s physical characteristics.
1. The cylindrical body of a shotshell.2. Improper term for a shotgun barrel.3. A barrel insert to allow firing of a smaller gauge shotshell.
A circumferential separation of a shotshell tube or body.
See Magazine, Tubular.
An English term that is sometimes used to denote a shotgun hammer. Also refers to an interior part of gun locks which contain notchs that interact with the sear.
The end-over-end rotation of an unstable projectile in flight. Sometimes referred to as Bullet Tipping or Keyholing.
See Mount, Tunnel.
See Action, Turnbolt.
The distance required for one complete turn of rifling usually expressed as a ratio, e.g., 1 in 10 inches.
Barrel rifling in which the rate of twist is faster at the muzzle than at the chamber end.
See Mount, Two-Piece.
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