The Definition of Hornady Magnum Rimfire
Hornady Magnum Rimfire
A type rimfire rifle cartridge developed by the ammunition company Hornady.
.17 Hornady Magnum Rimfire (4.5×27mmR), commonly known as the .17 HMR, was developed in 2002.
It descended from the .22 Magnum by necking down the .22 Magnum case to take a .17 caliber (4.5 mm) bullet.
19 Other Firearms Definitions You Need To Know
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.
This is the maximum overall length the cartridge can be (and is expected to be) in order to function properly in magazines and the mag well of a bolt action rifle.
A line, either imaginary or marked, from which people shoot their firearms down range.
"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
A long, slender, dowel-like tool used to force powder and shot down the bore of a muzzle-loading firearm.
For hand-fired guns, normally retained in some kind of receptacle attached to the gun's barrel. Carried separately for muzzle-loading cannon.
The face of the action of a break-open firearm which houses the firing pins and receives the direct recoil of the fired round.
The distance the trigger must travel before it reaches the break point and fires the gun.
The forward end of the bolt which supports the base of the cartridge and contains the firing pin.
On an outdoor shooting range, a large pile of dirt that functions as a backstop.
A bullet or shot in flight after discharge from a firearm.
A mark within a border, typically
stamped into the wood, especially of an American military rifle. It shows the
initials of the name of the accepting inspector and often, the date he accepted
the firearm into service.
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.
The substance which imparts movement to the projectile in a firearm. In a firearm, usually powder. In an airgun the propellant is air or Co2
The action of moving live cartridges from the magazine of a firearm into the chamber.
Small spherical projectiles loaded in shotshells and more often called "shot."
To prepare or charge a muzzle loader for firing.
The first shot from a rifle that has been cleaned, and not fired recently may go to a different point of impact, for the same point of aim than a rifle that has been fired recently.
This first shot is referred to as a shot from a cold, clean, bore.
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