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500 Linebaugh
The .500 Linebaugh is a .50 caliber handgun cartridge designed for use in revolvers. It is considered one of the most powerful handgun cartridges designed in terms of kinetic energy and power factor (momentum). History The .500 Linebaugh cartridge was designed by John Linebaugh of Maryville, Missouri, in 1986. John Linebaugh had been converting .45 Colt six-shooters to five-shot revolvers, thus offering a stronger cylinder which could withstand the firing of higher-pressure .45 Colt ammunition. While this venture was successful, he continued to search for a more powerful cartridge, which resulted in the .500 Linebaugh. The cartridge case itself was designed by cutting off the .348 Winchester case to , turning the rim to a diameter of and opening the case mouth to accept a .510 caliber (12.95 mm) bullet. The first revolvers converted to use the .500 Linebaugh were the Ruger Bisley and the Seville revolvers. Due to the demise of the Seville revolvers in the early 1990s, all ... [...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 primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...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 ''kinesis'', m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Factor (shooting Sports)
Power Factor (PF) in practical shooting competitions refers to a ranking system used to reward cartridges with more recoil. Power factor is a measure of the momentum of the bullet (scaled product of the bullet's mass and velocity), which to some degree reflects the recoil impulse from the firearm onto the shooter (see section on limitations). Power factor is used in competitions sanctioned by the International Practical Shooting Confederation (IPSC), United States Practical Shooting Association (USPSA), Bianchi Cup, Steel Challenge and International Defensive Pistol Association (IDPA). Calculation The power factor is based on the bullet's momentum as it's moving through the air by measuring the ''bullet speed'' using a chronograph and measuring a similar ''bullet mass'' on a weighing scale, thereafter calculating the ''power factor'' by the formula: : = \cdot Units The ''power factor'' can be represented using different units: *The SI-unit newton-second (kg⋅m/s, or si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Momentum
In Newtonian mechanics, momentum (more specifically linear momentum or translational momentum) is the product of the mass and velocity of an object. It is a vector quantity, possessing a magnitude and a direction. If is an object's mass and is its velocity (also a vector quantity), then the object's momentum is : \mathbf = m \mathbf. In the International System of Units (SI), the unit of measurement of momentum is the kilogram metre per second (kg⋅m/s), which is equivalent to the newton-second. Newton's second law of motion states that the rate of change of a body's momentum is equal to the net force acting on it. Momentum depends on the frame of reference, but in any inertial frame it is a ''conserved'' quantity, meaning that if a closed system is not affected by external forces, its total linear momentum does not change. Momentum is also conserved in special relativity (with a modified formula) and, in a modified form, in electrodynamics, quantum mechanics, quan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
45 Colt
The .45 Colt (11.43×33mmR), is a rimmed, straight-walled, handgun cartridge dating to 1872. It was originally a black-powder revolver round developed for the Colt Single Action Army revolver. This cartridge was adopted by the U.S. Army in 1873 and served as an official US military handgun cartridge for 14 years. History The .45 Colt was a joint development between Colt's Patent Firearms Manufacturing Company, of Hartford, Connecticut, and the Union Metallic Cartridge Company of Bridgeport, Conn. Colt began work on the revolver in 1871, and submitted a sample to the U.S. Army in late 1872. The revolver was accepted for purchase in 1873. The cartridge is an inside lubricated type. The rebated heel type bullet design of its predecessor, the .44 Colt (.452–.454" diameter bullet), was eliminated, since it was an outside lubricated type, which would pick up dirt and grit during handling. The .45 Colt replaced the .50 caliber Model 1871 Remington single shot pistol and the variou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
348 Winchester
Year 348 ( CCCXLVIII) was a leap year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Philippus and Salia (or, less frequently, year 1101 ''Ab urbe condita''). The denomination 348 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 Europe * Wulfila escapes religious persecution by the Gothic chieftain Athanaric, and obtains permission from Constantius II to migrate with his flock of converts to Moesia, and settle near Nicopolis ad Istrum (Bulgaria). Asia * In Persia, women are enrolled in the army to perform auxiliary services. * In India, Samudragupta of the Gupta Empire defeats Rudrasena in battle. Births * Prudentius, Roman Christian poet (d. 413) * Shenoute, monk and saint (d. 466) Deaths * May 9 – Pachomius the Great, founder of Christian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruger Bisley
The Ruger Blackhawk is a six-shot, single-action revolver manufactured by Sturm, Ruger & Co. It is produced in a variety of finishes, calibers, and barrel lengths. History In the early 1950s, Westerns were popular in movies and television. Colt had discontinued the iconic Single Action Army prior to World War II, and few single-action revolvers were available to meet market demand for cowboy-style revolvers. In 1953, the new firm of Sturm, Ruger & Company introduced the Single-Six, a .22 LR rimfire single-action revolver. The Single-Six proved to be a popular seller, leading Ruger to develop and market a centerfire revolver similar to the Single Action Army: the Ruger Blackhawk. The Ruger Blackhawk was named after the Stutz Blackhawk automobile. Ruger introduced the Blackhawk in 1955. Chambered for the .357 Magnum, the Blackhawk was a simple and strong design, and it sold well. In 1956, as Smith & Wesson was introducing the new .44 Magnum, Ruger quickly developed a variant of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
475 Linebaugh
The .475 Linebaugh is a rimmed revolver cartridge developed by John Linebaugh in the late 1980s in response to the scarcity of the .348 Winchester brass required to form his .500 Linebaugh cartridge. The cartridge is based on the .45-70 Government case trimmed to 1.4 inches and loaded with bullets. While dimensionally similar to the older .45 Silhouette cartridge, the .475 Linebaugh is loaded to considerably higher pressures, resulting in significantly different ballistic performance. The .475 Linebaugh was first announced in the May 1988 issue of ''Guns & Ammo'' in an article written by Ross Seyfried. In 1991, Linebaugh announced a 1.6 inch variant of the .475 Linebaugh for use in converted Ruger .357 Maximum revolvers. This cartridge is known as the .475 Linebaugh Long or .475 Linebaugh Maximum, and produces somewhat greater ballistic performance than the shorter round. Usage The .475 Linebaugh is intended primarily for hunting and defense against big game. The .475 is capab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruger Redhawk
The Ruger Redhawk is a DA/SA, large-frame revolver that was first introduced in 1979 by Sturm, Ruger & Company. Made from high-grade steel, it is available in a stainless steel finish. The Redhawk is reinforced to handle extra stress, making it very popular for use by handloaders as it is able to handle both .45 Colt and .44 Magnum loads. In addition, the cylinder itself is longer than most competitors', allowing ammunition to be loaded to a longer overall length. This allows for either increased powder capacity, heavier (and therefore longer) bullets without compromising the powder load, or a combination of both. Custom ammunition manufacturers even have loads made specifically for Ruger revolvers that cannot fit in shorter chambers or revolvers of weaker construction (such as the Smith & Wesson Model 29). This makes the Redhawk popular as a bear defense gun among hunters and trappers. Design and construction The Redhawk was the first large-bore double-action revolver made by Ru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
500Linebaugh01
5 (five) is a number, numeral and digit. It is the natural number, and cardinal number, following 4 and preceding 6, and is a prime number. It has attained significance throughout history in part because typical humans have five digits on each hand. In mathematics 5 is the third smallest prime number, and the second super-prime. It is the first safe prime, the first good prime, the first balanced prime, and the first of three known Wilson primes. Five is the second Fermat prime and the third Mersenne prime exponent, as well as the third Catalan number, and the third Sophie Germain prime. Notably, 5 is equal to the sum of the ''only'' consecutive primes, 2 + 3, and is the only number that is part of more than one pair of twin primes, ( 3, 5) and (5, 7). It is also a sexy prime with the fifth prime number and first prime repunit, 11. Five is the third factorial prime, an alternating factorial, and an Eisenstein prime with no imaginary part and real part of the form 3p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
