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6.5×47mm Lapua
The 6.5×47mm Lapua (designated as the 6,5 × 47 Lapua by the C.I.P.) is a smokeless powder rimless bottlenecked rifle cartridge that was developed specifically for competition shooting by ammunition maker Nammo Lapua and the Swiss rifle manufacturer Grünig & Elmiger AG in 2005. Other common names for this cartridge include 6.5×47mm. Features The cartridge has many special features, including: * The cartridge chamber dimensions are optimized for target bullets. * High pressure level ( Pmax piezo pressure) and cartridge case capacity enables relative high velocity and flat trajectory. * Reduced barrel wear compared to 6mm Norma BR * The 6.5×47mm Lapua has a base diameter and overall length similar to the 7.62×51mm NATO/ .308 Winchester, allowing it to accept the same bolt heads and fit into similar short actions and magazines. * A small rifle primer that is easier to seat and allows for higher case pressure than a large rifle primer. History The 6.5×47mm Lapua has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Finland
Finland, officially the Republic of Finland, is a Nordic country in Northern Europe. It borders Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland to the south, opposite Estonia. Finland has a population of 5.6 million. Its capital and largest city is Helsinki. The majority of the population are Finns, ethnic Finns. The official languages are Finnish language, Finnish and Swedish language, Swedish; 84.1 percent of the population speak the first as their mother tongue and 5.1 percent the latter. Finland's climate varies from humid continental climate, humid continental in the south to boreal climate, boreal in the north. The land cover is predominantly boreal forest biome, with List of lakes of Finland, more than 180,000 recorded lakes. Finland was first settled around 9000 BC after the Last Glacial Period, last Ice Age. During the Stone Age, various cultures emerged, distinguished by differen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rifling
Rifling is the term for helical grooves machined into the internal surface of a firearms's barrel for imparting a spin to a projectile to improve its aerodynamic stability and accuracy. It is also the term (as a verb) for creating such grooves. The opposite of rifling is smoothbore. Rifling is measured in ''twist rate'', the distance the rifling takes to complete one full revolution, expressed as a ratio with 1 as its base (e.g., 1:). A shorter distance/lower ratio indicates a faster twist, generating a higher spin rate (and greater projectile stability). The combination of length, weight, and shape of a projectile determines the twist rate needed to gyroscopically stabilize it: barrels intended for short, large-diameter projectiles such as spherical lead balls require a very low twist rate, such as 1 turn in 48 inches (122 cm). Barrels intended for long, small-diameter projectiles, such as the ultra-low-drag 80-grain 0.223 inch bullets (5.2 g, 5.56&nb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
243 Winchester
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43 may refer to: * 43 (number) * one of the years 43 BC, AD 43, 1943, 2043 * Licor 43, also known as "Cuarenta Y Tres" ("Forty-three" in Spanish) * George W. Bush, 43rd president of the United States, nicknamed "Bush 43" to distinguish from his father * "Forty Three", a song by Karma to Burn from the album ''Appalachian Incantation'', 2010 * 43 Ariadne, a main-belt asteroid * 43rd Regiment * The international calling code for Austria Austria, formally the Republic of Austria, is a landlocked country in Central Europe, lying in the Eastern Alps. It is a federation of nine Federal states of Austria, states, of which the capital Vienna is the List of largest cities in Aust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
6 Mm Caliber
This is a list of firearm cartridges which have bullets of a caliber between and . *''Length'' refers to the cartridge case Case or CASE may refer to: Instances * Instantiation (other), a realization of a concept, theme, or design * Special case, an instance that differs in a certain way from others of the type Containers * Case (goods), a package of relate ... length *''OAL'' refers to the overall length of the cartridge Measurements are in millimeters then inches, i.e. ''mm (in)''. Pistol cartridges Rifle cartridges .24 in (6.2 mm) .25 in (6.5 mm) .26 in (6.6 mm) and up See also * .25 caliber References {{Firearm cartridge calibers Pistol and rifle cartridges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Rifle Cartridges
List of rifle cartridges, by primer type, Caliber, calibre and name. File:Cartridge Sample 2.jpg, 350px, From left to right: 1 .17 Hornady Mach 2, 2 .17 Hornady Magnum Rimfire, 3 .22 Long Rifle, 4 .22 Winchester Magnum Rimfire, 5 .17/23 SMc, 6 5mm/35 SMc, 7 .22 Hornet, 8 .223 Remington, 9 .223 WSSM, 10 .243 Winchester, 11 .243 Winchester, .243 Winchester Improved (Ackley), 12 .25-06 Remington, 13 .270 Winchester, 14 .308 Winchester, 15 .30-06 Springfield, 16 .45-70 Government, 17 .50-90 Sharps rect 54 345 101 556 .17 Hornady Mach 2 rect 110 296 153 556 .17 Hornady Magnum Rimfire rect 159 341 207 556 .22 Long Rifle rect 211 294 265 556 .22 Winchester Magnum Rimfire rect 271 221 341 556 .17/23 SMc rect 345 186 432 556 5 mm/35 SMc rect 441 225 513 556 .22 Hornet rect 521 151 602 556 .223 Remington rect 610 134 724 556 .223 Winchester Super Short Magnum rect 732 95 832 556 .243 Winchester rect 838 85 929 556 .243 Winchester, .243 Winchester Improved (Ackley) rect 937 23 1030 556 .25-06 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Firearms
This is an extensive list of small arms—including pistols, revolvers, submachine guns, shotguns, battle rifles, assault rifles, sniper rifles, machine guns, personal defense weapons, carbines, designated marksman rifles, multiple-barrel firearms, grenade launchers, underwater firearms, anti-tank rifles, anti-materiel rifle and any other variants. This list is by no means complete. A * AA12 * Arisaka AK Rifles *AK-47 *AK-74 * AK-74M * AKM * AK-12 * AK-15 * AK-19 * AK-101 * AK-102 *AK-103 * AK-104 * AK-105 * AK-200 * AK-201 * AK-202 * AK-203 * AK-204 * AK-205 * AK-308 * AKS-74U * AK-55 * AKV-521 * AK-56 * American-180 * Angstadt Arms MDP-9 * AR-7 *AR-10 * AR-12 * AR-13 * AR-15 *AS VAL * AR-16 * AR-18 * AR-100 * AN-94 * AUG A1 * AUG A2 * AUG A3 * AUG A3 PARA * A-91-P *A-91 B * Blaser * Blaser K95 * Blaser R8 * Blaser R93 * Blaser R93 Tactical * Blaser F3 * Blaser F16 * Blaser B95 * Benelli * Benelli M4 * Benelli M3 * Benelli M2 * Benelli M1 * Benelli Supernova * Benelli Nov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metallic Silhouette
Metallic silhouette shooting is a group of target shooting disciplines that involves shooting at steel targets representing game animals at varying distances, seeking to knock the metal target over. Metallic silhouette is shot with large bore rifles fired freehand without support out to 500 meters, and with large bore handguns from the prone position with only body support out to 200 meters. Competitions are also held with airguns and Black powder, black-powder firearms. A related genre is shot with bow and arrow, the metal targets being replaced with cardboard or foam. The targets used are rams, turkeys, pigs, and chickens, which are cut to different scales and set at certain distances from the shooter depending on the specific discipline. History Metallic silhouette is descended from an old Mexican sport, dating back to the early 20th century, wherein live game animals were staked out at varying distances as targets. By 1948, metal cutouts of the animals were used instead of li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precision Rifle Blog
Precision, precise or precisely may refer to: Arts and media * ''Precision'' (march), the official marching music of the Royal Military College of Canada * "Precision" (song), by Big Sean * ''Precisely'' (sketch), a dramatic sketch by the English playwright Harold Pinter Science, and technology, and mathematics Mathematics and computing (general) * Accuracy and precision, measurement deviation from true value and its scatter * Significant figures, the number of digits that carry real information about a measurement * Precision and recall, in information retrieval: the proportion of relevant documents returned * Precision (computer science), a measure of the detail in which a quantity is expressed * Precision (statistics), a model parameter or a quantification of precision Computing products * Dell Precision, a line of Dell workstations * Precision Architecture, former name for PA-RISC, a reduced instruction set architecture developed by Hewlett-Packard * Ubuntu 12.04 "Prec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
260 Remington
6 (six) is the natural number following 5 and preceding 7. It is a composite number and the smallest perfect number. In mathematics A six-sided polygon is a hexagon, one of the three regular polygons capable of tessellation, tiling the plane. A hexagon also has 6 Edge (geometry), edges as well as 6 internal and external angles. 6 is the second smallest composite number. It is also the first number that is the sum of its proper divisors, making it the smallest perfect number. It is also the only perfect number that doesn't have a digital root of 1. 6 is the first unitary perfect number, since it is the sum of its positive proper unitary divisors, without including itself. Only five such numbers are known to exist. 6 is the largest of the four Harshad number, all-Harshad numbers. 6 is the 2nd superior highly composite number, the 2nd colossally abundant number, the 3rd triangular number, the 4th highly composite number, a pronic number, a congruent number, a harmonic divisor nu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proof (firearms)
A proof test is a form of stress test to demonstrate the fitness of a load-bearing or impact-experiencing structure. An individual proof test may apply only to the unit tested, or to its design in general for mass-produced items. Such a structure is often subjected to loads above those expected in actual use, demonstrating safety and design margin. Proof testing is nominally a nondestructive test, particularly if both design margins and test levels are well-chosen. However, unit failures are by definition considered to have been destroyed for their originally-intended use and load levels. Proof tests may be performed before a new design or unit is allowed to enter service, or perform additional uses, or to verify that an existing unit is still functional as intended.Tes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Primer (firearm)
In firearms and artillery, the primer () is the chemical and/or device responsible for initiating the propellant combustion that will propel the projectiles out of the gun barrel. In early black powder guns such as muzzleloaders, the primer was essentially the same chemical as the main propellant (albeit usually in a finer-powdered form), but poured into an external flash pan, where it could be ignited by an ignition source such as a slow match or a flintlock, though some muzzleloaders have primers like cap gun caps. This external powder was connected through a small opening at the rear of the gun barrel that led to the main charge within the barrel. As gunpowder will not burn when wet, this made it difficult (or even impossible) to fire these types of weapons in rainy or humid conditions. Modern primers, by contrast, are more specialized and distinct from the main propellant they are designed to ignite. They are of two types, those using shock-sensitive chemicals, and those r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grain (mass)
A grain is a unit of measurement of mass, and in the troy weight, avoirdupois, and apothecaries' systems, equal to exactly . It is nominally based upon the mass of a single ideal seed of a cereal. From the Bronze Age into the Renaissance, the average masses of wheat and barley grains were part of the legal definitions of units of mass. Expressions such as "thirty-two grains of wheat, taken from the middle of the ear" appear to have been ritualistic formulas. Another source states that it was defined such that 252.458 units would balance of distilled water at an ambient air-water pressure and temperature of and respectively. Another book states that Captain Henry Kater, of the British Standards Commission, arrived at this value experimentally. The grain was the legal foundation of traditional English weight systems, and is the only unit that is equal throughout the troy, avoirdupois, and apothecaries' systems of mass. The unit was based on the weight of a single grain of barl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
