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A typical break-action, double-barreled shotgun. A way of closing the breech or chamber is an essential part of any breech-loading weapon or firearm.Perhaps the simplest way of achieving this is a break-action, in which the barrel, forestock and breech pivot on a hinge that joins the front assembly to the rear of the firearm, incorporating the rear of the breech, the butt and usually, the ...
Breech-loading firearm that belonged to Philip V of Spain, made by A. Tienza, Madrid circa 1715. It came with a ready-to-load reusable cartridge. This is a miquelet system. Mechanism of Philip V's breech-loading firearm (detail) The breech mechanism of the Ferguson rifle. Breech-loading firearms are known from the 16th century.
For best results, the breech must be opened at the proper time, just as the forward momentum of the gases reaches its maximum, the peak flow. This means that bore extractors are normally used only on guns with semi-automatic or fully automatic actions, where the breech is opened and the shell ejected as part of the recoil process.
The recoil operation is a type of locked-breech action used in semi-automatic and fully automatic firearms. It also uses energy from the combustion in the chamber acting directly on the bolt through the cartridge head, but in this case the firearm has a reciprocating barrel and breech assembly, combined with a bolt that locks to the breech.
The cap has one closed end. Inside the closed end is a small amount of a shock-sensitive explosive material such as fulminate of mercury. The percussion cap is placed over a hollow metal "nipple" at the rear end of the gun barrel. Pulling the trigger releases a hammer, which strikes the percussion cap and ignites the explosive primer.
E.g. if the preponderance was quoted as 4 tons 2 + 1 ⁄ 2 cwt (4.2 t) as for the RML 17.72-inch "100-ton" gun, the breech end sat with that weight on its mounting, enough to ensure stability but not enough to hinder changes in elevation. The preponderance of British muzzle-loading guns was typically stamped on the end of one of the trunnions.
breech, the lower part of a pulley block; breech, the penetration of a boiler where exhaust gases leave it; breech birth, when the baby is born feet or bottom first; breeches, an item of clothing covering the body from the waist down; buttocks, or breech, the lower part of the human abdomen
Chambers of a revolver's cylinder. The act of chambering a cartridge means the insertion of a round into the chamber, either manually or through the action of the weapon, e.g., pump-action, lever-action, bolt action, or autoloading operation generally in anticipation of firing the weapon, without need to "load" the weapon upon decision to use it (reducing the number of actions needed to ...