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.277 Wolverine
The .277 Wolverine (6.8x39mm) is a wildcat cartridge. It is a multi-purpose mid-power cartridge with increased ballistic performance over the AR-15's traditional .223 Remington (5.56×45mm NATO) cartridge. The use of a modified 5.56 case means that at minimum, only a new barrel is needed to convert any 5.56-based firearm to .277 Wolverine. Design For fundamentally the same reasons that a .277 inch (7.04 mm) diameter bullet was selected for the 6.8mm Remington SPC (mass-to-diameter-to-length for mid-weight bullets constrained to loading in an AR-15/M16 STANAG magazine), 6.8 mm became the caliber for a new AR-15 wildcat. Like the .300 AAC Blackout and unlike the 6.8 SPC and other "larger bore" AR-15 cartridges, the .277 Wolverine is based on the widely available 5.56×45mm parent case. Therefore, rifle components such as the bolt and magazine are interchangeable between 5.56×45mm and .277 Wolverine firearms, and standard AR-15 magazines can be used with no loss of c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five major unincorporated territories, nine United States Minor Outlying Islands, Minor Outlying Islands, and 326 Indian reservations. The United States is also in Compact of Free Association, free association with three Oceania, Pacific Island Sovereign state, sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Palau, Republic of Palau. It is the world's List of countries and dependencies by area, third-largest country by both land and total area. It shares land borders Canada–United States border, with Canada to its north and Mexico–United States border, with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speed Of Sound
The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. At , the speed of sound in air is about , or one kilometre in or one mile in . It depends strongly on temperature as well as the medium through which a sound wave is propagating. At , the speed of sound in air is about . The speed of sound in an ideal gas depends only on its temperature and composition. The speed has a weak dependence on frequency and pressure in ordinary air, deviating slightly from ideal behavior. In colloquial speech, ''speed of sound'' refers to the speed of sound waves in air. However, the speed of sound varies from substance to substance: typically, sound travels most slowly in gases, faster in liquids, and fastest in solids. For example, while sound travels at in air, it travels at in water (almost 4.3 times as fast) and at in iron (almost 15 times as fast). In an exceptionally stiff material such as diamond, sound travel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Table Of Handgun And Rifle Cartridges
This is a table of selected pistol/ submachine gun and rifle/ machine gun cartridges by common name. Data values are the highest found for the cartridge, and might not occur in the same load (e.g. the highest muzzle energy might not be in the same load as the highest muzzle velocity, since the bullet weights can differ between loads). Legend * Factory loadings. Number of manufacturers currently producing complete cartridges - e.g. Norma, RWS, Hornady, Winchester, Federal, Remington, Sellier & Bellot, Prvi Partizan. May be none for obsolete and wildcat cartridges. * H/R: Handgun (H) or rifle (R) - dominant usage of the cartridge (although several dual-purpose cartridges exist) * Size: Metric size - may not be official * MV: Muzzle velocity, in feet-per-second * ME: Muzzle energy, in foot-pounds * P: Momentum, in pound (force) (lbf) times seconds. A guide to the recoil from the cartridge, and an indicator of bullet penetration potential. The .30-06 Springfield The .30- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Rifle Cartridges
List of rifle cartridges, by primer type, calibre and name. File:Cartridge Sample 2.jpg, 350px, From left to right: 1 .17 HM2,2 .17 HMR, 2.5 .17 wsm, 3 .22LR, 4 .22 WMR, 5 .17/23 SMc, 6 5mm/35 SMc, 7 .22 Hornet, 8 .223 Remington, 9 .223 WSSM, 10 .243 Winchester, 11 .243 Winchester Improved (Ackley), 12 .25-06 Remington, 13 .270 Winchester, 14 .308, 15 .30-06, 16 .45-70, 17 .50-90 Sharps rect 54 345 101 556 .17 HM2 rect 110 296 153 556 .17 HMR rect 159 341 207 556 .22LR rect 211 294 265 556 .22 WMR 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 WSSM rect 732 95 832 556 .243 Winchester rect 838 85 929 556 .243 Winchester Improved (Ackley) rect 937 23 1030 556 .25-06 Remington rect 1039 25 1123 556 .270 Winchester rect 1132 93 1218 556 .308 rect 1227 17 1316 556 .30-06 rect 1326 106 1440 556 .45-70 rect 1456 31 1585 556 .50-90 Sharps desc none Rimfir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of AR Platform Cartridges
The AR platform has become widely popular for makers of hunting and sporting rifles. Although the designations "AR-10" and "AR-15" are respectively trademarks of ArmaLite and Colt, variants of both are made by many manufacturers. The AR-15 rifles usually comes chambered for either the military cartridge 5.56×45mm or the .223 Remington. Because of the pressures associated with the 5.56×45mm, it is not advisable to fire 5.56×45mm rounds in an AR-15 marked as .223 Rem, since this can result in damage to the rifle or injury to the shooter. The AR-15 can be chambered in many other calibers; it is then often referred to as an AR-15 style rifle. AR-15 cartridges Rimfire cartridges * .17 HMR * .17 Mach 2 * .17 Winchester Super Magnum * .22 Long Rifle * .22 Winchester Magnum Rimfire Centerfire cartridges imperial measurement * .17 Mach IV * .17 Remington Fireball * .17 Remington * .17-223 * .20 Practical * .20 GPC (wildcat) * .22 GPC (wildcat) * 22 Grendel (wildcat) aka 224 Gre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossary Of Firearms Terminology
The following are terms related to firearms and ammunition topics. A *Accurize, accurizing: The process of altering a stock firearm to improve its accuracy. * Action: The physical mechanism that manipulates cartridges and/or seals the breech. The term refers to the method in which cartridges are loaded, locked, and extracted from the mechanism. Actions are generally categorized by the type of mechanism used. A firearm action is technically not present on muzzleloaders as all loading is done by hand. The mechanism that fires a muzzleloader is called the lock. *Adjustable sight: Iron sights that allow the user to change the markings, intended for firing at multiple possible ranges. *Ammunition or ammo: Gunpowder and artillery. Since the design of the cartridge, the meaning has been transferred to the assembly of a projectile and its propellant in a single package. * Assault rifle: A service rifle capable of semi- or full automatic fire, that fires intermediate cartridges. *Assaul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
25-45 Sharps
The 25-45 Sharps (6.35×45mm) is a firearms cartridge designed by Michael H Blank, then CEO of the Sharps Rifle Company, LLC, as a general hunting cartridge for most North American game, in particular Deer, Antelope, Hogs, and Coyotes. Unlike 300 AAC Blackout which was targeted specifically at the suppressed rifle market, and adapted to hunting, the 25-45 Sharps was designed primarily as a hunting round. That is not to say the round does not have tactical applications as its ballistics exceed that of the 5.56x45mm NATO cartridge. The cartridge name is derived from its caliber ( bullet) and case length of 45 millimeters (necked-up 5.56×45 mm), as opposed to older hyphenated cartridges that were named for caliber and powder charge. Factory ballistics with the bullet equal those of the original .250-3000 Savage with the same bullet weight. See also * 6×45mm * 6.5×45 mm TCU * 6 mm calibre * Table of handgun and rifle cartridges This is a table of selected pistol/su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
50 Beowulf
The .50 Beowulf is a 12mm caliber rifle cartridge developed by Bill Alexander of Alexander Arms for use in an AR-15 rifle. Design and specifications The cartridge utilizes a rebated rim, sized to match the rim of the 6.5mm Grendel round. The case body is very similar in dimensions to the .500 S&W Magnum revolver cartridge, being slightly longer and fully tapered for automatic feeding in the weapon. The round is intended to improve stopping power greatly at short- to medium-range as compared to the standard 5.56×45mm NATO round. One of its advertised uses is at vehicle checkpoints, since the heavy bullet's flight path is not easily deflected by auto glass or standard vehicle body panels. Design limitations With normal bullet weights between , overall cartridge length shorter than that of an AR-15 magazine well, and holding to pressures of 33,000 psi limited by the AR bolt strength system, the .50 Beowulf is best described as a low-velocity, heavy caliber, making its ballisti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
17 HMR
.17 Hornady Magnum Rimfire, commonly known as the .17 HMR, is a rimfire rifle cartridge developed by Hornady in 2002. It was developed by necking down a .22 Magnum case to take a .17 caliber (4.5 mm) projectile. Commonly loaded with a 17 grain (1.1 g) projectile, it can deliver muzzle velocities in excess of 775 m/s (2,650 ft/s). Development The .17 HMR round is similar to rounds developed by dedicated rimfire wildcatters who worked to create a rimfire cartridge with an exceptionally flat trajectory. These wildcatters were seeking to match the ballistics of the obsolete 5mm Remington Rimfire Magnum, which was made from 1970 to 1974, and was to that point the fastest rimfire cartridge ever produced. With 5 mm diameter barrels and bullets being virtually unavailable at the time (the 5mm RMR was the last commercial 5 mm round until the 2004 release of the centerfire .204 Ruger), the commercially available .17 caliber became their bullet of choice. The .22 Winch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
270 Winchester
The .270 Winchester is a rifle cartridge developed by Winchester Repeating Arms Company in 1923 and unveiled in 1925 as a chambering for their bolt-action Model 54The Complete Reloading Manual for the .270 Winchester, Loadbooks USA, Inc., 2004, pp.13,19 to become arguably the flattest shooting cartridge of its day, only competing with the .300 Holland & Holland Magnum, also introduced in the same year. As the .280 Remington, and the .30-06 Springfield, the .270 Winchester derived from the .30-03 parent case and the bore diameter was likely inspired by 7mm Mauser. The .270 Winchester uses a .270 inch (6.86 mm) bore diameter and a .277 inch (7.04 mm) bullet diameter. History Introduced in 1925 along with the Winchester Model 54 bolt action rifle under the name "270 WCF" (270 Winchester Centerfire), the .270 Winchester was not an immediate success due to the popularity of the relatively recently introduced .30-06 Springfield, chambered for the M1903 Springfield bolt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
308 Winchester
The .308 Winchester is a smokeless powder rimless bottlenecked rifle cartridge widely used for hunting, target shooting, police, military, and personal protection applications globally. It is similar but not identical to the 7.62×51mm NATO cartridge. History During the 1940s, the .300 Savage became the basis for experiments on behalf of the U.S. military that resulted in the development of the T65 series of experimental cartridges. The original experimental case design by the Frankford Arsenal was designated the T65 and was similar to the .300 Savage case, but with less taper. The experimental cases were made from standard .30-06 Springfield cases which gave a little less capacity than standard .300 Savage cases because the Frankford Arsenal cases had slightly thicker case walls. The later T65 iterations were lengthened compared to the original T65 case and provided a ballistic performance roughly equal to the U.S. military .30-06 Springfield service cartridge. Over forty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kinetic Energy
In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest. Formally, a kinetic energy is any term in a system's Lagrangian which includes a derivative with respect to time. In classical mechanics, the kinetic energy of a non-rotating object of mass ''m'' traveling at a speed ''v'' is \fracmv^2. In relativistic mechanics, this is a good approximation only when ''v'' is much less than the speed of light. The standard unit of kinetic energy is the joule, while the English unit of kinetic energy is the foot-pound. History and etymology The adjective ''kinetic'' has its roots in the Greek word κίνησις ''ki ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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