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.338 Lapua
The .338 Lapua Magnum (8.6×70 mm or 8.58×70 mm) is a rimless, bottlenecked, centerfire rifle cartridge. It was developed during the 1980s as a high-powered, long-range cartridge for military snipers. It was used in the War in Afghanistan and the Iraq War. As a result of this, it has become widely available. The loaded .338 cartridge is in diameter (rim) and long. It can penetrate better-than-standard military body armor at ranges of up to , and has a maximum effective range of about with C.I.P. conforming ammunition at sea level conditions. Muzzle velocity is dependent on barrel length, seating depth, and powder charge, and varies from for commercial loads with bullets, which corresponds to about of muzzle energy. British military issue overpressure .338 Lapua Magnum cartridges with overall length, loaded with LockBase B408 very-low-drag bullets fired at 936 m/s (3,071 ft/s) muzzle velocity fired from a L115A3 Long Range Rifle were used in November 2009 b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
338 Norma Magnum
__NOTOC__ Year 338 ( CCCXXXVIII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Ursus and Polemius (or, less frequently, year 1091 ''Ab urbe condita''). The denomination 338 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * The Romans, allied with the Goths, arrive in the north of the Roman Empire to protect the Danube frontier. * Emperor Constantius II intervenes against the Persians in Armenia. Persia * Shapur II, king of the Persian Empire, begins a widespread persecution of Christians. He orders forcible conversions to the state religion, Zoroastrianism, lest the Christians disrupt his realm while he is away fighting the Romans in Armenia and Mesopotamia. Asia * Tuoba Yihuai, ruler of the Tuoba Dai clan, dies and is su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Musa Qala
; "Fortress of Moses") is a town and the district centre of Musa Qala District in Helmand Province, Afghanistan. It is located at and at an altitude of 1,043 m in the valley of Musa Qala River in the central western part of the district. Its population has been reported in the British press to be both 2,000 and 20,000. It is in a desolate area, populated by native Pashtun tribes.Rahmani, Waliullah (23 March 2006) "Helmand Province and the Afghan Insurgency" ''Terrorism Monitor'' 4(6): pp. 3-5, p.4 Climate With virtually no rainfall during the year, Musa Qala features a |
Plastic Deformation
In engineering, deformation refers to the change in size or shape of an object. ''Displacements'' are the ''absolute'' change in position of a point on the object. Deflection is the relative change in external displacements on an object. Strain is the ''relative'' internal change in shape of an infinitesimally small cube of material and can be expressed as a non-dimensional change in length or angle of distortion of the cube. Strains are related to the forces acting on the cube, which are known as stress, by a stress-strain curve. The relationship between stress and strain is generally linear and reversible up until the yield point and the deformation is elastic. The linear relationship for a material is known as Young's modulus. Above the yield point, some degree of permanent distortion remains after unloading and is termed plastic deformation. The determination of the stress and strain throughout a solid object is given by the field of strength of materials and for a struc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accuracy International
Accuracy International is a British firearms manufacturer based in Portsmouth, Hampshire, England. The company produces the Accuracy International Arctic Warfare series of precision sniper rifles. The company was established in 1978 by British Olympic shooting gold medallist Malcolm Cooper, MBE (1947–2001), Sarah Cooper, Martin Kay, and the designers of the weapons, Dave Walls and David Caig. The founders were professional international or national sport shooters. Accuracy International's sniper rifles are used internationally in military units and police departments. Accuracy International went into liquidation in 2005, and was bought by a British consortium including the original design team of Dave Walls and David Caig. Management As of 2014, the company was equally owned by two directors, Dave Walls and Tom Irwin along with Paul Bagshaw. David Caig remains in the business as a consultant. Production The rifles are hand-built. Accuracy International introduced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SAKO
Sako or SAKO may refer to: People with the surname * Bakary Sako (born 1988), French-born Malian footballer * Hygerta Sako, Albanian beauty pageant contestant * Louis Raphaël I Sako (born 1948), Iraqi cleric, head of the Chaldean Catholic Church * Masato Sako (1946–2003), Japanese actor * Morike Sako (born 1981), French footballer * Kenichi Sako (born 1970), Japanese basketball player * Sevkaretsi Sako (1870–1908), Armenian revolutionary * Tomohisa Sako (born 1991), a Japanese singer * Yago Alonso-Fueyo Sako (born 1979), Côte d'Ivoire-born Equatoguinean footballer * Yugo Sako (c.1928–2012), Japanese film maker Other uses * SAKO (programming language), a Polish 1950s programming language * Sako Station, a railway station in Japan * SAKO, a Finnish firearm manufacturer * A diminutive form of the Armenian male name Sargis Sargis or Sarkis ( hy, Սարգիս, ; , ) is a male given name in both Armenian and Assyrian communities. It is the reduced form of the Armenian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cartridges 7
Cartridge may refer to: Objects * Cartridge (firearms), a type of modern ammunition * ROM cartridge, a removable component in an electronic device * Cartridge (respirator), a type of filter used in respirators Other uses * Cartridge (surname), a surname * Cartridge Creek Cartridge Creek is a creek near Fresno, California. It terminates in the Middle Fork Kings River. The creek is part of Kings Canyon National Park Kings Canyon National Park is an American national park in the southern Sierra Nevada, in Fres ..., a creek near Fresno, California, United States See also * * {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hornady
Hornady Manufacturing Company is an American manufacturer of ammunition cartridges, components and handloading equipments, based in Grand Island, Nebraska. History The company is currently run by Joyce Hornady's son, Steve Hornady, who took over after his father's death in a plane crash on January 15, 1981. The Piper Aztec, with Hornady at the controls flying in heavy fog, crashed into Lake Pontchartrain while on final approach to New Orleans Lakefront Airport. Pacific Tool Company Steve Hornady worked for Pacific Tool Company from 1960 to 1971, from the time the company moved from California to Nebraska until Pacific Tool was bought by Hornady. Pacific's DL-366 was their final progressive press and Hornady's first, and it is still manufactured by Hornady as the 366 Auto. Products Cartridges Hornady makes target shooting and hunting rounds as well as self-defense loads. In 1990, the Hornady XTP (which stands for Extreme Terminal Performance) won the industry's Product Award of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smokeless Powder
Finnish smokeless powderSmokeless powder is a type of propellant used in firearms and artillery that produces less smoke and less fouling when fired compared to gunpowder ("black powder"). The combustion products are mainly gaseous, compared to around 55% solid products (mostly potassium carbonate, potassium sulfate, and potassium sulfide) for black powder. In addition, smokeless powder does not leave the thick, heavy fouling of hygroscopic material associated with black powder that causes rusting of the barrel. Despite its name, smokeless powder is not completely free of smoke; while there may be little noticeable smoke from small-arms ammunition, smoke from artillery fire can be substantial. Originally invented in 1884 by Paul Vieille, the most common formulations are based on nitrocellulose, but the term was also used to describe various picrate mixtures with nitrate, chlorate, or dichromate oxidizers during the late 19th century, before the advantages of nitrocellulose becam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cordite
Cordite is a family of smokeless propellants developed and produced in the United Kingdom since 1889 to replace black powder as a military propellant. Like modern gunpowder, cordite is classified as a low explosive because of its slow burning rates and consequently low brisance. These produce a subsonic deflagration wave rather than the supersonic detonation wave produced by brisants, or high explosives. The hot gases produced by burning gunpowder or cordite generate sufficient pressure to propel a bullet or shell to its target, but not so quickly as to routinely destroy the barrel of the gun. Cordite was used initially in the .303 British, Mark I and II, standard rifle cartridge between 1891 and 1915; shortages of cordite in World War I led to the creation of the "Devil's Porridge" munitions factory (HM Factory, Gretna) on the English-Scottish border, which produced 800 tonnes of cordite per annum. The UK also imported some United States–developed smokeless powders for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penetration (weapons)
Strictly speaking, penetration occurs when a projectile enters a target without passing through it and perforation occurs when the projectile completely passes through the target, but the word ''penetration'' is commonly used to refer to either. Penetration into a ''semi-infinite'' or ''massive'' target is penetration (in the strict sense of the word) of targets so thick that the level of penetration is not affected by the target's thickness. There is a ''transition region'' between semi-infinite penetration and perforation, in which the target is not perforated but the projectile, as it nears the back face of the target, meets reduced resistance and is capable of penetrating a greater distance than it would in a semi-infinite target. This effect is variously named the back or rear surface, plate, or face effect and is also present when perforation occurs. A penetrating projectile may cause the target to break into multiple pieces, spewing from both the front and back of the targe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sectional Density
Sectional density (often abbreviated SD) is the ratio of an object's mass to its cross sectional area with respect to a given axis. It conveys how well an object's mass is distributed (by its shape) to overcome resistance along that axis. Sectional density is used in gun ballistics. In this context, it is the ratio of a projectile's weight (often in either kilograms, grams, pounds or grains) to its transverse section (often in either square centimeters, square millimeters or square inches), with respect to the axis of motion. It conveys how well an object's mass is distributed (by its shape) to overcome resistance along that axis. For illustration, a nail can penetrate a target medium with its pointed end first with less force than a coin of the same mass lying flat on the target medium. During World War II, bunker-busting Röchling shells were developed by German engineer August Cönders, based on the theory of increasing sectional density to improve penetration. Röc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bullet
A bullet is a kinetic projectile, a component of firearm ammunition that is shot from a gun barrel. Bullets are made of a variety of materials, such as copper, lead, steel, polymer, rubber and even wax. Bullets are made in various shapes and constructions (depending on the intended applications), including specialized functions such as hunting, target shooting, training and combat. Bullets are often tapered, making them more aerodynamic. Bullet sizes are expressed by their weights and diameters (referred to as "calibers") in both imperial and metric measurement systems. For example: 55 grain .223 caliber bullets are of the same weight and caliber as 3.56 gram 5.56mm caliber bullets. Bullets do not normally contain explosives but strike or damage the intended target by transferring kinetic energy upon impact and penetration. Bullets shot by firearms can be used for target practice or hunting. Description The term ''bullet'' is from Middle French, originating as the diminutiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
