The Definition of Ammunition
The "packaged" components that are needed in order to fire in a case or shell holding a primer,
(which produces the spark) a charge of propellant (gunpowder) and a projectile (bullets, slug or pellets.)
Sometimes called "fixed ammunition" to differentiate from the individual components placed separately in muzzleloaders.
A single unit of ammunition in modern firearms is called a cartridge. The units of measure for quantity of ammunition is rounds.
There are hundreds of sizes of ammunition, examples include .223 Remington, 9mm Luger, 30.06, .308 Winchester,
.300 Winchester Magnum, and .50 Browning Machine Gun (BMG). The ammunition used must match the firearm.
19 Other Firearms Definitions You Need To Know
Abbreviation for Accidental Discharge
A large piece of curved metal at the top of the grip on a pistol which protects the user's hand from getting "bitten" by the hammer or slide.
It is nearly always the top part of the grip safety commonly found on many 1911-style pistols.
The opening in the bottom of the gun into which a box magazine is fed. On a semi-auto handgun,
the magazine well is at the base of the grip; on a rifle, it is usually placed in front of the trigger guard.
The chemical propellant which is burned to produce the hot gases which send the projectile flying downrange.
A process of filling gaps between the action and the stock of a rifle with an epoxy based material.
The arc described by a projectile (or a load of shot) after it exits the muzzle of a firearm. Falling objects accelerate downwards at a rate of 32 feet per second, per second.
The faster a projectile travels, the greater the distance it can cover in a given time before dropping too far. Hence, the higher the velocity of a bullet, the flatter the trajectory it will achieve.
A display of gunmaking 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 riflemakers in the USA.
A semi-automatic pistol in which the barrel and breechblock are locked together for only a short distance of rearward recoil travel,
at which point the two are uncoupled, the barrel is stopped and the breechblock continues rearward, extracting the spent casing from the chamber.
Upon returning forward, the breechblock chambers a fresh round and forces the barrel back into its forward position.
Most modern recoil operated semi-automatic pistols use short recoil.
A rapidly burning powder made by absorbing nitroglycerine into nitrocellulose (guncotton).
A common type of iron sights in which the rear sight is an open-topped U or a V or a square-notch shape and with a
blade type front sight, in contrast to the closed circle commonly found in aperture sights.
Synonymous with "handgun." A gun that is generally held in one hand. It may be of the single-shot, multi-barrel, repeating or semi-automatic variety and includes revolvers.
Some triggers can be pulled slightly backwards before the shooter can feel any tension and before
the hammer or striker begins to retract. Pre-travel is any movement of the trigger that begins before the trigger starts to engage.
The power of a projectile or a load of shot at the point that it exits the muzzle of a firearm, normally expressed in foot-pounds.
A 1/60th part of a degree, the unit of measure used in adjusting rifle sights.
As it turns out conveniently, a minute of angle translates almost exactly to one inch at 100 yards
(actually 1.047 inches), to two inches at 200 yards and three inches at 300 yards
A mechanism that prevents the gun from being able to fire when the magazine is removed from the gun, even if there is still a round in the chamber.
A round of ammunition that does not fire.
Abbreviation for feet per second. A term used in expressing the velocity of a bullet.