Ear Muffs
  • Hearing protection that completely covers both ears and is usually attached to a headband
Ear Plugs
  • Hearing protection that fits inside the ear canal.
  • Slang for hearing protection, muffs or plugs. The use of specially designed ear muffs or plugs that reduce the intensity of the sound reaching the ears is of course recommended. Some of the guns are so loud that a single shot can can cause permanent damage to unprotected ears.
Ejection Port
  • The opening through which the empty, spent ammunition case is ejected from of a firearm.
Ejection Rod
  • The sliding metal dowel located at the muzzle end of a revolver cylinder. After firing, the shooter opens the cylinder and depresses the front end of the ejection rod, which forces the empty cases out of the cylinder.

noun - ejec·tor (ĭ-jĕk′tər)

  • A device for expelling a fired cartridge case from a firearm, one that ejects; especially : a mechanism of a firearm that ejects an empty cartridge
  • Fittings inset into the breech end of a pair of barrels of a break-open gun that kick out fired shells, while only raising un-fired shells enough to be removed by hand. Recognizable at a glance on the breech end of a double gun because the fitting is split in two---one ejector for each barrel.
  •  A spring-activated mechanism for the ejection of ammunition or and empty shell casing. On doubles, each barrel has a separate ejector.

Auto Ejector Auto Ejector                                                   Revolver Ejector Rod Revolver Ejector Rod

Ejector Star
  • On a revolver, the collective ejector, manually operated through the center of an opened cylinder, when activated, clears all chambers at once.
Ejector Timing
  • The adjustment of the ejector mechanism by gun maker or gunsmith so that both ejectors of a double gun will fire at the correct instant when gape is sufficient as the barrels are dropped, simultaneously, and with identical force.
Electronic Hearing Protection
  • Ear muff hearing protection that has internal electronics that amplify human voices while excluding all noises louder than a given decibel rating.
  • The setting on the sights of a firearm that controls the vertical placement and the altitude above mean sea level. This is important for long range precision shooting because the air density changes with elevation and affects the path of the bullet.
  • Adjustment of the point of impact of a firearm in the vertical plane; the knob used on an iron sight or telescopic sight to raise or lower the point of impact.
  • Capability to perform work. As measured in foot-pounds, the amount of force it takes to lift and object weighing one pound, one foot. To calculate the energy, in foot-pounds, of a bullet in flight at any point on its trajectory:

                W = Weight of the bullet in grains.    V =  Velocity in feet per second

Engine Tuned
  • An jeweled treatment on a steel part done both for a finished look and to hold oil on the surface. An abrasive-impregnated rubber bit is used to describe a circular pattern on the surface of the steel, then moved just a little less than distance of the diameter of the bit, touched to the surface again, and the process repeated until the steel surface is covered with small regular rows of circular swirls
English Casing
  • A style of gun case whereby all the cased components are secured into more open box-like compartments---the barrels and action secured well enough, but the accessories liable to moving about a bit. An alternative to French casing, where all the cased components---barrels, action and accessories are fitted into shaped compartments with no space around them
English Grip
  • A straight-wrist grip, typical on English shotguns, built for graceful aesthetics, light weight and fast handling. May be ovoid or somewhat diamond-shaped in cross-section.


noun ero·sion \i-ˈrō-zhən\

  • Deterioration of the inner surface of a firearm's barrel due to the intense heat of a cartridge's discharge. High-velocity rifles are particularly susceptible to this wear, especially near the throat.

noun es·cutch·eon \is-ˈkə-chən\

  • A plate, typically of more complex outline than a simple oval, typically of brass or precious metal, inlaid into a gunstock or a gun case, upon which is engraved the initials, monogram or coat-of-arms of the owner.


  1. understood by or meant for only the select few who have special knowledge or interest.
  2. belonging to the select few.
  3. private; secret; confidential.
  4. (of a philosophical doctrine or the like) intended to be revealed only to the initiates of a group.
  • Westley Richards' trademark name for a Paradox-rifled gun, in 12-bore.
  • Any substance (TNT, etc.) that, through chemical reaction, detonates or violently changes to gas with accompanying heat and pressure.
  • Marketing term coined by Purdey around 1855 to denote a high velocity rifle---as powerful as an express train.
Express Sights
  • A "V" shaped rear leaf sights mounted to a rifle barrel on a block or on a quarter-rib, sometimes solid standing, sometimes folding, and often mounted in a row of similar leaves, each of a slightly different height, marked with the range for which each is regulated.
Extended Top Tang
  • A display of gun making skill with a possible benefit of strengthening the wrist of a heavily-recoiling rifle, whereby the top tang of the action is made extra long, shaped and inletted into the top of the buttstock, extending along the top of the wrist and up over the comb. Popularized by Holland & Holland and adopted by several of the finest contemporary rifle makers in the USA.
External Safety
  • A safety lever found on the outer surfaces of the firearm and accessible to the user.
  • A device that withdraws or elevates a fired shell casing from the chamber as the breech mechanism (slide) is opened.
Eye Dominance
  • Although we have two eyes for depth perception and for spare parts, there is a natural tendency for one eye (the master eye) to take precedence over the other, regardless of the relative visual acuity of each eye. It is a fortunate condition when the eye on the side of the shoulder where one is comfortable mounting a gun is also the dominant eye.

    To test for eye dominance, pick out a small object several feet away. With both eyes open, center your right index finger vertically over the object. Close your right eye. If your finger appears to jump to the right, you are right eye dominant. Then open your right eye and close your left eye. If your finger remains in position in front of the object, you have confirmed your right eye dominance. Alternatively, if in the above test, upon closing your right eye your finger remains in position covering the object, you are left eye dominant. If you close your left eye instead and your finger appears to jump to the left you have confirmed your left eye dominance.

    Eye dominance problems can be treated with 1. A severely-cast, crossover stock to bring the dominant eye in line with the gun's line of sight, 2. A patch over the dominant eye, or just a small piece of frosty Scotch tape on shooting glasses intercepting the dominant eye's line of sight, 3. Fully or partially closing the dominant eye, or 4. Learning to shoot from the dominant-eye shoulder.  While less convenient, methods that retain the use of both eyes better preserve the ability to perceive depth in three-dimensional space---a great benefit in wingshooting.

Eye Relief
  • The distance that equates the exit pupil size of a rifle scope's ocular lens to the entrance pupil of the user, in order to achieve the largest, unvignetted view. This distance must be sufficient to ensure that the ocular rim of the scope does not lacerate the shooter's eyebrow upon recoil. And, the scope should be positioned so that eye relief is suitable when the rifle is comfortably mounted.
  • Slang for safety glasses or other protection for the eyes. All shooters and spotters are required to wear eye protection while shooting is in progress.