Semi-automatic pistols have a single fixed firing chamber machined into the rear of the barrel, and a magazine, usually removable, so they can be used to fire more than one round.

A round of ammunition may be in the chamber or in the magazine while the handler thinks it is empty.

The resulting cartridge should be able to fit back into the specific rifle that previously fired it, though the fit will be tight and require more force to chamber than a full length resized case, especially on rifles with factory chambers which tend to be out of round.

* Loading fresh round into chamber and locking bolt

* Loading the next round into the firing chamber.

As each round is fired, electrically, the carriage moves back rotating the chamber which also ejects the spent case, indexes the next live round to be fired with the barrel and loads the next round into the chamber.

Other sears stop the firing pin from going forward after the round is locked into the chamber.

Depending on the type of machine pistol, some agencies train their officers to carry the weapon with a round in the chamber, the weapon cocked and the safety on.

Other agencies may prefer that officers carry the weapon without a round in the chamber.

As the user cocks the hammer, the cylinder revolves to align the next chamber and round with the hammer and barrel, which gives this type of firearm its name.

For example, should a semiautomatic pistol fail to fire, clearing the chamber requires manually cycling the action to remove the errant round, as cycling the action normally depends on the energy of a cartridge firing.

This action advances the cylinder to the next round and locks the cylinder in place with the chamber aligned with the barrel.

The trigger, when pulled, releases the hammer, which fires the round in the chamber.

In this case, the trigger first cocks the hammer and revolves the cylinder, and then trips the hammer at the rear of the trigger stroke, firing the round in the chamber.

The bolt moving rearward also compresses a strong recoil spring which subsequently returns the bolt forward, stripping a fresh round from the weapon's magazine and forcing it into the chamber in the process.

Michal explored the round chamber, but failed to spot the stone in the floor that led to the caves.

In 1981 Seev Jevin, the former director of the Israel Antiquities Authority, entered the passage after a group of Jewish settlers from Hebron had entered the chamber via the entrance near the mihrab and discovered the square stone in the round chamber that concealed the cave entrance.

A cartridge, also called a round, packages the bullet, propellant ( usually either smokeless powder or gunpowder ) and primer into a single unit within a containing metallic case that is precisely made to fit within the firing chamber of a firearm.

He was sitting on top of a log which was spinning round and around in the water.

The round minarets, tall and graceful, rise from rectangular bases and have three platforms from which the muezzin can chant his call to prayer.

The round cells were reproducibly positioned in the light beam which entered the thermostated mineral oil-bath through a window.

there was the daily round of household chores in which Maggie insisted on participating.

It is worth mentioning that the Nepōhualtzintzin amounted to the rank from 10 to the 18 in floating point, which calculated stellar as well as infinitesimal amounts with absolute precision, meant that no round off was allowed, when translated into modern computer arithmetic.

Since Fire Temple was at least partially built to conform to the dimensions of the cliff alcove in which it was built, it is neither round in form nor truly subterranean like other structures defined as kivas

Large piles of building were erected, with strong outside walls, capable of resisting the assaults of an enemy, within which all the necessary edifices were ranged round one or more open courts, usually surrounded with cloisters.

image: Goeldoric06390141. JPG | Doric columns support the roof of the lower court which forms the central terrace, with serpentine seating round its edge.

However, at the base of this crack is a round void called an ampulla which would have functioned to distribute force over a larger surface area, hindering the ability of the " crack " formed by the serration to propagate through the tooth.

alt = Black-and-white photograph of a statue consisting of an inscribed, round pedestal on top of which sits a seated, nude, male figure of which only the legs and lower torso are preserved

In antiquity a bronze figure of Triton on the summit, with a rod in his hand, turned round by the wind, pointed to the quarter from which it blew.

In this reign of a weak Emperor dominated by court politics, a major theme was the ambivalence felt by prominent individuals and the court parties that formed and regrouped round them towards barbarians, which in Constantinople at this period meant Goths.

Abated, an ancient technical term applied in masonry and metal work to those portions which are sunk beneath the surface, as in inscriptions where the ground is sunk round the letters so as to leave the letters or ornament in relief.

Some even depict it as a horned, dragon-like creature with a serpent-headed tail and small, round ears, while others have both " necks " of equal size so that it cannot be determined which is the rear head.

However, bryozoan colonies are founded by an ancestrula, which is round rather than shaped like a normal zooid of that species.

in 2012, the playoffs were expanded again so that two wild card teams face off in a one game wild card round to determine which team advances to the division series, with the playoffs then continuing as it had before 2012 ( though with the possibilty of a fifth seed being in the playoffs and a fourth seed being out ) after the end of the wild card round.

The maximum 50, 000-point bonus is awarded for clearing a round in 5 seconds or less ; this bonus then drops down to zero over the next minute, after which no bonus is awarded.

Many jurisdictions and sanctioning agencies also have a " three-knockdown rule ", in which three knockdowns in a given round result in a TKO.

According to Strabo, writing two centuries after the events, rather than being destroyed by the Romans like their Celtic neighbours, " the Boii were merely driven out of the regions they occupied ; and after migrating to the regions round about the Ister, lived with the Taurisci, and carried on war against the Daci until they perished, tribe and all — and thus they left their country, which was a part of Illyria, to their neighbours as a pasture-ground for sheep.

Previous BBC News programming includes Head 2 Head, Your News, STORYFix and News 24 Tonight a regular weekday evening programme providing a round up of the day's news which ran from 2005 to 2008.

In the 1960s V-8 engines began to appear and during the 1969 / 1970 production years, the standard round " porthole "- style windows were replaced with larger rectangular windows which allowed more interior light and made them feel less claustrophobic.

Often, low-floor trams are fitted with nonpivoting bogies and many tramway enthusiasts see this as a retrograde step, as it leads to more wear of both track and wheels and also significantly reduces the speed at which a tram can round a curve.

The WCC begins with a qualifying round in which competitors play 10 matches against randomly assigned opponents.