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Soft-point Bullet
A soft-point bullet (SP), also known as a soft-nosed bullet, is a jacketed expanding bullet with a soft metal core enclosed by a stronger metal jacket left open at the forward tip. A soft-point bullet is intended to expand upon striking flesh to cause a wound diameter greater than the bullet diameter. Jacketed soft point bullets are usually abbreviated ''JSP'' in the ammunition and reloading industry. Evolution Lead-alloy bullets used with gunpowder firearms were unsatisfactory at the bullet velocities available from rifles loaded with nitrocellulose propellants such as cordite. By the late 19th century, lead-alloy bullets were being enclosed within a jacket of stronger mild steel or copper alloyed with nickel or zinc to reliably impart stabilizing rotation in rifled barrels. The lead-alloy core was swaged into a cup of the stronger metal covering the front and sides of the core, but leaving some of the core exposed on the base of the bullet. The bullet jacket may be described ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy
In physics, energy (from Ancient Greek: ἐνέργεια, ''enérgeia'', “activity”) is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The unit of measurement for energy in the International System of Units (SI) is the joule (J). Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object (for instance due to its position in a field), the elastic energy stored in a solid object, chemical energy associated with chemical reactions, the radiant energy carried by electromagnetic radiation, and the internal energy contained within a thermodynamic system. All living organisms constantly take in and release energy. Due to mass–energy equivalence, any object that has mass whe ... [...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, flamethrowers, multiple-barrel firearms, grenade launchers, anti-tank rifles, and any other variants. A * AA12 * AG87 *AK-47 * AK-74 * AKM * AK-12 * AK-101 * AK-102 * AK-103 * AK-104 * AK-105 * AKS-74u * AK-55 * AKV-521 * American-180 * AR-10 *AR-15 * AR-13 *AS VAL *AR-18 * AR-100 *AN-94 *AUG A1 * AUG A2 *AUG A3 *AUG A3 B BFG 50 Benelli C C7A2 D * Daewoo ** Daewoo K1 (South Korea – carbine – .223 Remington) *** Daewoo K1A (South Korea – carbine – .223 Remington) *** Daewoo MAX-1 (South Korea – semi-automatic carbine – .223 Remington) *** Daewoo XK1 (South Korea – carbine – .223 Remington: Prototype) ** Daewoo K2 (South Korea – assault rifle – 5.56×45mm NATO) *** Daewoo AR-100 (South Korea – assault rifle – 5.56×45mm NATO ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Recoil
Recoil (often called knockback, kickback or simply kick) is the rearward thrust generated when a gun is being discharged. In technical terms, the recoil is a result of conservation of momentum, as according to Newton's third law the force required to accelerate something will evoke an equal but opposite reactional force, which means the forward momentum gained by the projectile and exhaust gases (ejectae) will be mathematically balanced out by an equal and opposite momentum exerted back upon the gun. In hand-held small arms, the recoil momentum will be eventually transferred to the ground, but will do so through the body of the shooter hence resulting in a noticeable impulse commonly referred to as a "kick". In heavier mounted guns, such as heavy machine guns or artillery pieces, recoil momentum is transferred to the Earth's surface through the platform on which the weapon is mounted. In order to bring the rearward moving gun to a halt, the momentum acquired by the gun is di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centerfire Ammunition
Two rounds of .357 Magnum, a centerfire cartridge; notice the circular primer in the center A centerfire cartridge is a firearm metallic cartridge whose primer is located at the center of the base of its casing (i.e. "case head"). Unlike rimfire cartridges, the centerfire primer is typically a separate component seated into a recessed cavity (known as the ''primer pocket'') in the case head and is replaceable by reloading. Centerfire cartridges have supplanted the rimfire variety in all but the smallest cartridge sizes. The majority of today's handguns, rifles, and shotguns use centerfire ammunition, with the exception of a few .17 caliber, .20 caliber, and .22 caliber handgun and rifle cartridges, small-bore shotgun shells (intended for pest control), and a handful of antique (and mostly obsolete) cartridges. History An early form of centerfire ammunition, without a percussion cap, was invented between 1808 and 1812 by Jean Samuel Pauly. This was also the first fully i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winchester Rifle
Winchester rifle is a comprehensive term describing a series of lever action repeating rifles manufactured by the Winchester Repeating Arms Company. Developed from the 1860 Henry rifle, Winchester rifles were among the earliest repeaters. The Model 1873 was particularly successful, being marketed by the manufacturer as "The Gun That Won the West". Predecessors In 1848, Walter Hunt of New York patented his "Volition Repeating Rifle" incorporating a tubular magazine, which was operated by two levers and complex linkages. The Hunt rifle fired what he called the "Rocket Ball", an early form of caseless ammunition in which the powder charge was contained in the bullet's hollow base. Hunt's design was fragile and unworkable, but in 1849, Lewis Jennings purchased the Hunt patents and developed a functioning, if still complex rifle. This version was produced in small numbers by Robbins & Lawrence of Windsor, Vermont until 1852. Horace Smith and Daniel Wesson of Norwich, Connectic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JSP And JHP Bullets
JSP may refer to: Computing * Jackson structured programming *JavaServer Pages, server-side Java *Java stored procedure (SQL/JRT) Organisations *The Japanese School in Perth *Jewish Settlement Police, an organization established in Mandatory Palestine in 1936 *JSP Records, a record label Politics *Japan Socialist Party, a political party existed from 1945 to 1996 in Japan *Jai Samaikyandhra Party, a political party in India *Jana Sena Party, a political party in India Other uses *Japanese Surrendered Personnel *Jacketed, soft point, a soft-point bullet *Jesup station (Amtrak station code), a train station in Georgia, US *Joint Service Publication, a UK MoD document *''The Joseph Smith Papers'', the published volumes of all of Joseph Smith's writings *Joseph Smith Papyri The Joseph Smith Papyri (JSP) are Egyptian funerary papyrus fragments from ancient Thebes dated between 300 to 100 BC which, along with four mummies, were once owned by Joseph Smith, the founder of the Latter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerodynamics
Aerodynamics, from grc, ἀήρ ''aero'' (air) + grc, δυναμική (dynamics), is the study of the motion of air, particularly when affected by a solid object, such as an airplane wing. It involves topics covered in the field of fluid dynamics and its subfield of gas dynamics. The term ''aerodynamics'' is often used synonymously with gas dynamics, the difference being that "gas dynamics" applies to the study of the motion of all gases, and is not limited to air. The formal study of aerodynamics began in the modern sense in the eighteenth century, although observations of fundamental concepts such as aerodynamic drag were recorded much earlier. Most of the early efforts in aerodynamics were directed toward achieving Aircraft#Heavier than air – aerodynes, heavier-than-air flight, which was first demonstrated by Otto Lilienthal in 1891. Since then, the use of aerodynamics through mathematical analysis, empirical approximations, wind tunnel experimentation, and computer simu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hollow-point Bullet
upright=0.2, Cross-section of a hollow-point bullet; proportions are those of a .22 Long Rifle cartridge Jacketed soft point (JSP) round. Right: Jacketed hollow-point (JHP) round. JSP is a semi-jacketed round as the jacket does not extend to the tip">soft point bullet">Jacketed soft point (JSP) round. Right: Jacketed hollow-point (JHP) round. JSP is a semi-jacketed round as the jacket does not extend to the tip Various hollow points: .45 Auto, .38 Special, .44 S&W Special">.38_Special.html" ;"title=".45 Auto, .38 Special">.45 Auto, .38 Special, .44 S&W Special, .44 Remington Magnum file:22-45.jpg, .45 ACP Federal HST 230gr hollow point cartridge, with two rounds of CCI Standard Velocity .22 Long Rifle, .22 LR for comparison purposes file:40SW.jpg, .40 S&W round, complete cartridge and expanded bullet file:Federal 9mm hollow point.jpg, A 9×19mm Parabellum, 9mm hollow point cartridge, along with unexpanded and expanded bullets. The expanded lead bullet and copper jacket are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Big-game Hunting
Big-game hunting is the hunting of large game animals for meat, commercially valuable by-products (such as horns/antlers, furs, tusks, bones, body fat/oil, or special organs and contents), trophy/taxidermy, or simply just for recreation ("sporting"). The term is often associated with the hunting of Africa's "Big Five" games (lion, African elephant, Cape buffalo, African leopard, and rhinoceros), and with tigers and rhinoceroses on the Indian subcontinent. History Hunting of big game for food is an ancient practice, possibly arising with the emergence of ''Homo sapiens'' (anatomically modern humans), and possibly pre-dating it, given the known propensity of other great apes to hunt, and even eat their own species. The Schöningen spears and their correlation of finds are evidence that complex technological skills already existed 300,000 years ago, and are the first obvious proof of an active (big game) hunt. ''H. heidelbergensis'' already had intellectual and cognitive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Varmint Rifle
Varmint rifle is an American English term for a small-caliber precision firearm or high-powered airgun primarily used for both varmint hunting (the elimination of outdoor animals which harass properties) and pest control (the eradication of indoor infestation by destructive species). These tasks include killing three types of Pest (organism), pests or nuisance animals that zoönosis, spread diseases or destroy crops or livestock: * Small/medium-sized non-game (hunting), game animals such as crows, ground squirrels, jackrabbits, nutria, marmots, groundhogs, porcupines, opossums, skunks and weasels; * Introduced species, Non-native feral/invasive species such as starlings, cats, dogs, goats, wild boar/feral pig, pigs and Feral donkeys in Australia, donkeys; * Animals considered to be nuisance vermin destructive to man-made properties and vegetation, crops and domestic livestocks, such as rats, house sparrows, Gopher (animal), gophers, and small predators such as coyotes and jackals.C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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