.577 450 Martini-Henry
.577 may refer to: * .577 Black Powder Express, a black powder, centerfire round * .577 Nitro Express, a rimmed metallic cartridge * .577 Tyrannosaur, a type of cartridge developed by A-Square in 1993 for big game hunting in Africa * .577/450 Martini-Henry, a black powder, centerfire round used by the British and British Empire militaries * .577 Snider, an obsolete cartridge produced around 1867 and replaced in service by the .577/450 Martini–Henry cartridge * The first three digits in the decimal expansion of the Euler–Mascheroni constant Euler's constant (sometimes also called the Euler–Mascheroni constant) is a mathematical constant usually denoted by the lowercase Greek letter gamma (). It is defined as the limiting difference between the harmonic series and the natural l ...

577 Black Powder Express
__NOTOC__ Year 577 ( DLXXVII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. The denomination 577 for this year has been used since early medieval times, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Byzantine Empire * Byzantine–Sassanid War: A Byzantine expeditionary force under command of Justinian (''magister militum'') invades Caucasian Albania, launching raids across the Caspian Sea against the Persians. * Summer – Tiberius, Byzantine co-ruler (''Caesar''), establishes a naval base at Derbent on the Caspian Sea to construct a Byzantine fleet (approximate date). * Winter – Maurice is appointed commander-in-chief of the Byzantine army in the East. He succeeds Justinian, despite complete lack of military experience. Europe * Battle of Deorham: The Anglo-Saxons under Ceawlin of Wessex invade the lower Severn Valley, and defeat the British ...
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577 Nitro Express
The .577 Nitro Express is a large-bore centerfire rifle cartridge designed for the purpose of hunting large game such as elephant. This cartridge is used almost exclusively in single-shot and double express rifles for hunting in the Tropics or hot climates in general and is a cartridge associated with the golden age of African safaris and Indian shikars. Design The .577 Nitro Express is a straight rimmed calibre cartridge designed for use in single-shot and double rifles. It has been made in three case lengths based on their respective black-powder .577 Black Powder Express cartridges. 2-inch The .577 Nitro Express is a conversion of the .577 Black Powder Express -inch, it fires a projectile at over . Never as popular as the 3-inch version, today it is only available by special order. 3-inch The .577 Nitro Express is a conversion of the .577 Black Powder Express 3-inch, it fires a projectile at over . This cartridge was to become the most popular of the three and a standar ...
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577 Tyrannosaur
The .577 Tyrannosaur or .577 T-Rex (14.9×76mm) is a very large and powerful rifle cartridge developed by A-Square in 1993 on request for professional guides in Zimbabwe who escort clients hunting dangerous game. The cartridge is designed for use in "stopping rifles" intended to stop the charge of dangerous game. The 577 contains a diameter monolithic solid projectile which when fired moves at producing of muzzle energy Muzzle energy is the kinetic energy of a bullet as it is expelled from the muzzle of a firearm. Without consideration of factors such as aerodynamics and gravity for the sake of comparison, muzzle energy is used as a rough indication of the de .... The production model from A-square is based on their Hannibal rifle. References External linksVideo of Arthur Alphin talking with David Petzal about the A-Square .577 T-Rex Pistol and rifle cartridges {{ammo-stub ...
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577 Snider
The .577 Snider cartridge was a British black powder metallic rimfire cartridge, which fired a , lead projectile, primarily used in the Snider–Enfield rifle. Early .577 Snider cartridges were made from a composite design using paper and brass foil with a stamped metallic base and primer, much like the first generation of Martini-Henry cartridges. Later cartridges (after the design had been proved with the Martini-Henry cartridges) were made from drawn brass, much like modern small arms ammunition. The .577 Snider cartridge was eventually replaced in service by the .577/450 Martini–Henry cartridge in the 1870s. The .577 Snider cartridge is considered by most commentators to be obsolete, with large scale commercial production having ceased in the 1930s. However, as of 2012, cases, bullets and cartridges as well as others of the .577 family are available from Tenbury Guns Limited (company dissolved 31 May 2016) in the United Kingdom. New brass can be formed from a 24 gauge ...
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