The Definition of Pattern
A shotgun term which refers to the manner in which the pellets spread out as they exit the gun.
"The pattern" refers to the overall shape of the entire set. A tight pattern is one in which the pellets are closely grouped when they land on target.
A loose pattern is one in which the pellets are widely spread.
19 Other Firearms Definitions You Need To Know
A condition (status) of a shooting range that shooters may commence to fire.
A Federal Firearms License (FFL) is a license in the United States that enables an individual or a company to engage in a business pertaining to
the manufacture of firearms and ammunition or the interstate and intrastate sale of firearms. Holding an FFL to engage in certain such activities has
been a legal requirement within the United States since the enactment of the Gun Control Act of 1968.
A type of aperture rear sight with a large opening and a thin rim that seems to fade out when the shooter looks through it.
Sometimes installed on rifles and shotguns intended for home defense or police use.
A strong spring which activates the striker or hammer of a firearm.
Usually only found on black powder muzzle loading rifles and pistols,
pulling the rear (set) trigger converts the front (main) trigger to a light, hair trigger
(too light and sensitive to be carried safely in the field). While the front trigger is always at the ready,
if one has the time, using the set trigger feature may allow for a more accurate long-distance shot.
Operates using its own miniature firing mechanism (sear, spring and hammer) when cocked,
to multiply the force of a pull on the main trigger.
A wildcat cartridge that is created by straightening out the sides of an existing case and making a sharper shoulder to maximize powder space.
Frequently the neck length and shoulder position are altered as well. The caliber is NOT changed in the process.
A bullet designed with a full diameter flat point. It is primarily used in target competition because it cuts a clean round hole in paper targets that aids in scoring the target.
A handgun or rifle shooting sport in which the competitors attempt to knock over metallic game-shaped targets at various ranges.
The rear sight is placed at the end of the barrel nearest the shooter. It may be in the shape of a square notch, a U, a V, a ring,
or simply two dots designed to be visually placed on either side of the front sight while shooting.
An established place where firearms and ammunition are stored, repaired, or manufactured.
The term is misused by the media to mean more than one firearm or any quantity of ammunition, as in "they found an arsenal."
An imaginary straight line from the eye through the sights of a firearm to the target.
To prepare or charge a muzzle loader for firing.
Sometimes spelled Bi-Pod.
A support device that is similar to a tripod or monopod, but with two legs. On firearms, bipods are commonly used on rifles to provide a forward rest and reduce motion.
The bipod permits the operator to rest the weapon on the ground, a low wall, or other object, reducing operator fatigue and permitting increased accuracy.
An unexpected delay between the triggering of a firearm and the ignition of the propellant.
This failure was common in firearm actions that relied on open primer pans, due to the poor or inconsistent quality of the powder.
Modern weapons are susceptible, particularly if the ammunition has been stored in an environment outside of the design specifications.
Reloaded ammunition may also be the cause if not reloaded properly
A type of firearms magazine that is cylindrical in shape, similar to a drum.
Probably the most recognizable drum magazine is the magazine for a Thompson carbine rifle, also known as the Tommy Gun.
Short for the word Ambidextrous. Meaning that a feature of a firearms can be used by either hand, for example ambi-safety, ambi slide catch or ambi mag release.
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 slang term for a revolver that holds siz rounds. Usually referring to cowboy style revolvers.
A quick shot taken without deliberate aim.
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