The Definition of Cylindro Conoidal Bullet
Cylindro Conoidal Bullet
A hollow base bullet, shaped so that, when fired, the bullet will expand and seal the bore.
It was invented by Captain John Norton of the British 34th Regiment in 1832, after he examined the blow pipe arrows used
by the natives in India and found that their base was formed of elastic locus pith, which by its expansion against the
inner surface of the blow pipe prevented the escape of air past it.
19 Other Firearms Definitions You Need To Know
A unit of adjustment for a sight.
Fouling of a firearm bore by metal particles from bullets adhering to the metal surface caused by heat or friction.
The accumulation of unwanted material on solid surfaces. The fouling material can consist of either powder, lubrication residue, or bullet material such as lead or copper.
Usually a telescopic firearm sight.
Slang for a gun or the action of carrying a gun concealed, e.g "The Bersa Thunder .380 is a fantastic gun for carrying" or "Do you carry?".
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.
The farthest distance that a target of a given size can be hit without holding over or under with the sights.
The exact range is determined by the performance of the cartridge used, the ZERO range, and the accepted size of the target area.
This term is not to be confused with point blank shooting.
A shotgun with two barrels, usually of the same gauge or bore.
The two types of double-barreled shotguns are over/under (abbreviated as O/U or OU),
in which the two barrels are stacked on top of each other, and side-by-side (abbreviated as SxS),
in which the two barrels sit beside each other. See photo at right for example of side-by-side double-barreled shotgun.
For double-barreled guns that use one shotgun barrel and one rifle barrel, see combination gun.
A steel ring, around an inch in diameter, mounted to a stud, usually on the left side of the receiver of a carbine,
to which may be tied a leather thong to secure it to a saddle or a scabbard so as not to lose the carbine when riding a rambunctious horse.
Plugs of hardened steel, precisely machined in relation to the standard dimensional specifications of a given cartridge,
normally in sets of three: "GO", "No-Go" and "Field". By loading these plug-gauges into the chamber in succession,
one can check that the action should close on the "Go" gauge. It should not close on the "No-Go" gauge,
but might were enough force to be used. And, it absolutely should not close on the "Field" gauge.
Covered compartment in the buttstock of a rifle used to carry patches or other small items.
Typically used in the .22 caliber cartridge designation .22 Long Rifle, which is abbreviated .22LR.
The abbreviation for Automatic Colt Pistol.
It is commonly used to designate specific calibers, particularly those which were originally designed by John Moses Browning for the
Colt Firearms Company which are a type of rimless pistol cartridge designed mainly for use in semi-automatic pistols.
The most common ACP calibers are .25 ACP, .32 ACP, .380 ACP and .45 ACP.
The size of the pellets in a shotgun shell.
The hinged cover over the opening through which cartridges are inserted into the magazine.
A rifle front sight with a extra-large, folding bead. Typically, in addition to the normal fine bead (which allows for more precision) the larger bead,
while at a cost of potential accuracy, is more readily acquired in marginal light. Also called a Gloaming sight
A concave, semi-cylindrical surface cut into the forward lump of a barrel set of a break-open firearm which revolves about the hinge-pin when the gun is opened.
A device, incorporated into the design of most firearms actions that, when engaged, should prevent the discharge of the firearm.
Some safeties are more positive than others. A safety device is not a perfect substitute for the general principles
of responsible gun handling. Never point a gun in a direction you do not intend to shoot
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