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Wad Cutter
A wadcutter is a special-purpose flat-fronted bullet specifically designed for shooting paper targets, usually at close range and at subsonic velocities typically under approximately 900 ft/s (274 m/s). Wadcutters have also found favor for use in self-defense guns, such as .38 caliber snubnosed revolvers, where, due to short barrel lengths, maximum bullet velocities are usually low, typically under 900 ft/s (274 m/s), and improved lethality is desired. Wadcutters are often used in handgun and airgun competitions. Bullet profile A wadcutter has a flat or nearly flat front that is typically as wide as the caliber size or only slightly smaller in diameter than caliber size. For target shooting, a wadcutter cuts a very clean hole through the paper target, making it easier to score and ideally reducing errors in scoring the target in the favor of the shooter. Because the flat nosed bullet is not well suited for feeding out of a magazine, wadcutters are normally use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gas Check
A gas check is a gasket type component of firearms ammunition. Gas checks are used when non- jacketed bullets are used in high pressure cartridges. The use of a gas check inhibits the buildup of lead in the barrel and improves accuracy. Construction Gas checks are most commonly found in the form of a thin cup or disc made of a ductile metal. Copper, zinc, aluminum, and alloys such as brass have been used. A bullet designed to accept a gas check has a rebated base shank which permits attachment of the check without altering the maximum diameter of the bullet. The shallow cup-shaped check is mechanically attached to the reduced shank of the bullet by swaging. Purpose High pressures, such as those commonly encountered in maximum loadings of magnum revolver cartridges or rifle cartridges, often result in significant problems when coupled with cast or swaged lead bullets. It was long thought that the high temperatures melted the base of the bullet, but this is no longer thought t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smith & Wesson Model 52
The Smith & Wesson Model 52, sometimes referred to as the 38 Master, is a semi-automatic pistol developed by Smith & Wesson for Bullseye shooting. It was one of the first semiautomatic pistols chambered in .38 Special with flush-seated, full wadcutter bullets. The shape of the rimmed cartridge limited the magazine capacity to five rounds. A variant, known as the Model 952, in 9 mm Parabellum, is still produced in limited quantities by Smith & Wesson's Performance Center. The Model 52 was discontinued in 1993 when the machinery to manufacture the pistol broke down and it was deemed too costly to replace. History In 1961 Smith & Wesson Model introduced the Model 52 as a match-grade target pistol derived from the Smith & Wesson Model 39 The Smith & Wesson Model 39 is a semi-automatic pistol developed for the United States Army service pistol trials of 1954. After the Army abandoned its search for a new pistol, the Model 39 went on the civilian market in 1955 and was the first of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elmer Keith
Elmer Merrifield Keith (March 8, 1899 – February 12, 1984) was an American rancher, firearms enthusiast, and author. Keith was instrumental in the development of the first magnum revolver cartridge, the .357 Magnum, as well as the later .44 Magnum and .41 Magnum cartridges, credited by Roy G. Jinks as "the father of big bore handgunning." Keith was born in Hardin, Missouri, and overcame serious injuries that he had sustained at age 12 in a fire when he was living in Missoula, Montana. Career During World War II, Keith served as an inspector at the Ogden, Utah, Arsenal. The rifles that he inspected were cartouche stamped with the initials "OGEK" in a rectangular box, on the buttstock. Rifles stamped OGEK without a rectangular box were inspected by Ed Klouser at the same Ogden Arsenal. In ''The Phantom Of Phu Bai'', a biography of USMC Scout Sniper Eric England written by Joseph B. Turner, one chapter is about Elmer Keith and his influence on the shooting community. Magnu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pellet (air Gun)
A pellet is a non-spherical projectile designed to be shot from an air gun, and an airgun that shoots such pellets is commonly known as a pellet gun. Air gun pellets differ from bullets and shot used in firearms in terms of the pressures encountered; airguns operate at pressures as low as 50 atmospheres, while firearms operate at thousands of atmospheres. Airguns generally use a slightly undersized projectile that is designed to obturate upon shooting so as to seal the bore, and engage the rifling; firearms have sufficient pressure to force a slightly oversized bullet to fit the bore in order to form a tight seal. Since pellets may be shot through a smoothbore barrel, they are often designed to be inherently stable, much like the Foster slugs used in smoothbore shotguns. Types Diabolo pellet The diabolo pellet (or "wasp waist pellet") is the most common design traditionally found in airguns. It consists of a solid front portion called the ''head'', which can have a flat ("w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
10 Metre Air Pistol
The 10 meter air pistol is an Olympic shooting event governed by the International Shooting Sport Federation (ISSF). It is similar to 10 meter air rifle in that it is shot with 4.5 mm (or .177) caliber air guns at a distance of 10 metres (11 yards), and that the match consists of a qualification round of 60 competition shots within 75 minutes. If an Electronic Scoring System (EST) is not available, 15 minutes are added to the time limit. Competitors are allowed to shoot an unlimited amount of shots during the 15 minutes preparation and sighting time. Along with the 50 meter pistol, it is considered a precision shooting event. Thus, numerous shooters compete in both events. There are some restrictions on the pistol regarding its dimensions, weight and trigger pull weight. It must be operated by one hand only from a standing, unsupported position. The shooter decides his or her own tempo as long as the maximum time is not exceeded. After the qualification round ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
10 Metre Air Rifle
10 metre air rifle (N.B. For "Meter" in this article – read "Metre") is an International Shooting Sports Federation (ISSF) shooting event, shot at a bullseye target over a distance of using a calibre air rifle with a maximum weight of . It is one of the ISSF-governed shooting sports included in the Summer Olympics since the 1984 Los Angeles Games. Shots are fired from the standing position only, as opposed to some other airgun disciplines such as for three positions (popular in the United States) or in disabled sports, which allows sitting and prone positions. Due to the low recoil of air guns and the need for stability, the shooter frequently adopts a deliberately lordotic and scoliotic posture, which allows the non-dominant elbow to be rested against the chest to support the forearm and improves the stability of the shooting stance. The use of specialized rigidly padded vest is allowed to prevent chronic back injury, which can be caused by prolonged asymmetric load on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Full Metal Jacket Bullet
A full metal jacket (FMJ) bullet is a small-arms projectile consisting of a soft core (often lead) encased in an outer shell ("jacket") of harder metal, such as gilding metal, cupronickel, or, less commonly, a steel alloy. A bullet jacket usually allows higher muzzle velocities than bare lead without depositing significant amounts of metal in the bore. It also prevents damage to bores from hard steel or armor-piercing core materials. History The bullet was invented in 1882 by Swiss Colonel Eduard Rubin while he was working for the Swiss Federal Ammunition Factory and Research Center, which developed ammunition for the Swiss military. The use of full metal jacketing in military ammunition came about in part because of the need for improved feeding characteristics in small arms that used internal mechanical manipulation of the cartridge in order to chamber rounds as opposed to externally hand-reloading single-shot firearms. The harder metal used in bullet jackets was less pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rifling
In firearms, rifling is machining helical grooves into the internal (bore) surface of a gun's barrel for the purpose of exerting torque and thus imparting a spin to a projectile around its longitudinal axis during shooting to stabilize the projectile longitudinally by conservation of angular momentum, improving its aerodynamic stability and accuracy over smoothbore designs. Rifling is characterized by its twist rate, which indicates the distance the rifling takes to complete one full revolution, such as "1 turn in 10 inches" (1:10 inches), "1 turn in 254 mm" ("1:254 mm" or "1:25.4 cm)", or the like. Normally, an experienced shooter can infer the units of measurement from the numbers alone. A shorter distance indicates a faster twist, meaning that for a given velocity the projectile will rotate at a higher spin rate. The combination of length, weight, and shape of a projectile determines the twist rate needed to gyroscopically stabilize it – barrel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead
Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is toxic, even in small amounts, especially to children. Lead is a relatively unreactive post-transition metal. Its weak metallic character is illustrated by its amphoteric nature; lead and lead oxides react with acids and bases, and it tends to form covalent bonds. Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighter members of the carbon group. Exceptions are mostly limited to organolead compounds. Like the lighter members of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semiwadcutter
A semiwadcutter (SWC) or flat-nose is a type of all-purpose bullet commonly used in revolvers. The SWC combines features of the traditional round-nosed bullets and the wadcutter bullets used in target shooting, and is used in both revolver and rifle cartridges for hunting, target shooting and plinking. Full wadcutters frequently have problems feeding from magazines reliably in semi-automatics, so SWCs may be used when a true WC is desired but cannot be used for this reason. The semiwadcutter design consists of a roughly conical shape with the tip truncated flat (called a ''meplat''), sitting on a cylinder (''A'' at right). The base of the cone is slightly smaller in diameter than the cylinder, leaving a sharp shoulder. The flat nose punches a clean hole in the target, rather than stretching/tearing it like a round nose bullet would, and the sharp shoulder enlarges the hole neatly, allowing easy and accurate scoring of the target. The SWC design offers better external ballist ... [...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 diminuti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
