12 mm caliber

This article lists firearm cartridges which have a bullet in the 12-millimeter (0.47 in) to 13-millimeter (0.51 in) caliber range.

Some measurements are in mm, others are in calibers, which are measured in inches.

Pistol cartridges

Revolver cartridges

Rifle cartridges

Note: The .50 Sharps, Winchester and US Government cartridges were actually of 13mm caliber.

See also

References

Machine gun

A machine gun is a fully automatic mounted or portable firearm, designed to fire bullets in quick succession from an ammunition belt or magazine, typically at a rate of 300 to 1800 rounds per minute. Fully automatic weapons are generally categorized as submachine guns, assault rifles, battle rifles, automatic shotguns, machine guns, or autocannons.

As a class of military firearms, true machine guns are fully automatic weapons designed to be used as support weapons and generally used when attached to a mount or fired from the ground on a bipod or tripod. Light machine guns are small enough to be fired hand-held, but are more effective when fired from a prone position. The difference between machine guns and other categories of weapons is based on caliber, with autocannons using calibers larger than 20 mm, and whether the gun fires conventional bullets, shotgun cartridges, or explosive rounds. Fully automatic guns firing shotgun cartridges are usually called automatic shotguns, and those firing large-caliber explosive rounds are generally considered either autocannons or automatic grenade launchers ("grenade machine guns"). Submachine guns are hand-held automatic weapons for personal defense or short-range combat firing pistol-caliber rounds. In contrast to submachine guns and autocannons, machine guns (like rifles) tend to have a very high ratio of barrel length to caliber (a long barrel for a small caliber); indeed, a true machine gun is essentially a fully automatic rifle, and often the primary criterion for a machine gun as opposed to a battle rifle is the presence of a quick-change barrel, heavyweight barrel, or other cooling system. Battle rifles and assault rifles may be capable of fully automatic fire, but are not designed for sustained fire.

Heavy machine gun

The heavy machine gun or HMG is a class of machine gun implying greater characteristics than medium machine guns.

There are two generally recognized classes of weapons identified as heavy machine guns. The first is weapons from World War I identified as "heavy" due to the weight and encumberment of the weapons themselves. The second is large-caliber (generally .50 or 12.7mm) machine guns, pioneered by John Moses Browning with the M2 machine gun, designed to provide increased range, penetration and destructive power against vehicles, buildings, aircraft and light fortifications beyond the standard rifle calibers used in medium or general-purpose machine guns, or the intermediate cartridges used in light machine guns.

Classification

The term was originally used to refer to the generation of machine guns which came into widespread use in World War I. These fired standard rifle cartridges such as the 7.92 Mauser, .303 British or 7.62×54mmR, but featured heavy construction, elaborate mountings, and water-cooling mechanisms that enabled long-range sustained automatic fire with excellent accuracy. However, these advantages came at the cost of being too cumbersome to move quickly, as well as requiring a crew of several soldiers to operate them. Thus, in this sense, the "heavy" aspect of the weapon referred to the weapon's bulk and ability to sustain fire, not the cartridge caliber. This class of weapons was best exemplified by the Maxim gun, invented by the American inventor Hiram Maxim, who had traveled to England to market his design and became a British subject in 1900. The Maxim was the most ubiquitous machine gun of World War I, variants of which were fielded simultaneously by three separate warring nations (Germany with the MG 08, Britain with the Vickers, and Russia with the PM M1910).

Fallout: New Vegas

Fallout: New Vegas is an action role-playing video game in the Fallout video game series. The game was developed by Obsidian Entertainment and published by Bethesda Softworks. It released for Microsoft Windows, Xbox 360 and PlayStation 3 in October 2010.

The game is set in a post-apocalyptic, open world environment around the area of Nevada, California, and Arizona. The player takes control of the character known as Courier 6, who, preceding the start of the game, is hired by a delivery service called the Mojave Express to take an unknown package across the Mojave Desert to the New Vegas Strip. The game starts during the delivery, where the Courier is intercepted, shot in the head, and left for dead by a mysterious man who steals the package. After being found by a friendly robot, Victor, and healed by a man named Doc Mitchell, the Courier is thrust back into the desert to seek revenge and recover the stolen package. By doing this, the player becomes caught between various factions competing for control over the desert and its most valuable asset, the Hoover Dam, ultimately coming to shape the future of its inhabitants.

7 mm caliber

This article lists firearm cartridges which have a bullet in the 7.0 millimetres (0.2756 in) to 7.99 millimetres (0.3146 in) caliber range.

All measurements are in mm (in), and all charts are sortable by clicking on the icon beside the title of the column you wish to sort.

Pistol cartridges

Revolver cartridges

Rifle cartridges

6.8 mm (.277 in) rifle cartridges (commonly known as .270 or 6.8 mm)

7.0 mm (.284 in) rifle cartridges (commonly known as 7mm)

7.8 mm (.308 in) rifle cartridges (commonly known as .308, 30 caliber, 7.62 mm)

7.8 mm (.310 in) and greater rifle cartridges

See also

References