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2.7mm Kolibri
The 2mm Kolibri (also known as the 2.7mm Kolibri Car Pistol or 2.7×9mm Kolibri) was the smallest commercially available centerfire cartridge,Barnes, Frank C. Cartridges of the World. DBI Books, 1976, p.146 patented in 1910 and introduced in 1914 by Franz Pfannl, an Austrian watchmaker, with financial support from Georg Grabner. It was designed to accompany the Kolibri semi-auto pistol or single-shot pistol, both marketed as self-defense weapons. The name is derived from '' Kolibri'', the German word for hummingbird, which is among the smallest of birds. Background The cartridge weighs 5.3 grams (82 grains), measures 3.6 millimeters (0.14 in) at its widest point, and 11 mm (0.43 in) from the base of the primer to the tip of the bullet. The cartridge is headspaced on the mouth of the case. The bullet itself masses 0.2 g (3 grains), and is estimated to have a normal muzzle velocity of , resulting in a muzzle energy of 4.0 J (3 ft-lbs).*Wilson, R. K. ''Te ... [...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] |
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 (at 2.064 lbf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2 Mm Caliber
This article lists firearm cartridges which have a caliber In guns, particularly firearms, caliber (or calibre; sometimes abbreviated as "cal") is the specified nominal internal diameter of the gun barrel Gauge (firearms) , bore – regardless of how or where the bore is measured and whether the f ... in the range. All measurements are in mm (in). 2 mm cartridges All dimensions are given in mm (in). References {{Firearm cartridge calibers Pistol and rifle cartridges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Handgun Cartridges
List of handgun cartridges, approximately in order of increasing caliber. Table of handgun cartridges {, class="wikitable sortable" style="text-align:left" , - ! Cartridge name , , Bulletdiameter , , Caselength , , Cartridgelength , , Type , , class="unsortable", Source , - , 2.34mm rimfire (for Swiss mini gun), , , , , , - , , Rimmed, rimfire , , {{cite web, , - , 2.7mm Kolibri (2mm Kolibri, 2.7×9mm), , {{convert, .107, in, mm, abbr=on , , {{convert, .370, in, mm, abbr=on , , {{convert, .430, in, mm, abbr=on , , Rimless , , {{sfn, Barnes , 1997, p=274 , - , 3 mm Kolibri, , {{convert, .120, in, mm, abbr=on , , {{convert, .320, in, mm, abbr=on , , {{convert, .430, in, mm, abbr=on , , Rimless , , {{sfn, Barnes , 1997, p=274 , - , 4.25 mm Liliput (4.25 mm Erika), , {{convert, .167, in, mm, abbr=on , , {{convert, .410, in, mm, abbr=on , , {{convert, .560, in, mm, abbr=on , , Rimless , , {{sfn, Barnes , 1997, p=274 , - , .17 Hornady Mach 2 (.17 HM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battlefield 1
''Battlefield 1'' is a first-person shooter game developed by DICE and published by Electronic Arts. It is the tenth installment in the ''Battlefield'' series and the first main entry in the series since '' Battlefield 4'' in 2013. It was released for Microsoft Windows, PlayStation 4 and Xbox One in October 2016. ''Battlefield 1'' received positive reviews from critics, who saw it as an improvement over the series' previous installments, ''Battlefield 4'' and '' Battlefield Hardline''. Most of the praise was directed towards its World War I setting, single-player campaigns, multiplayer modes, visuals, and sound design. The game was a commercial success, selling over 15 million copies, and was followed by ''Battlefield V'' in 2018. Gameplay Similar to its predecessors, ''Battlefield 1'' is a first-person shooter game that emphasizes teamwork. It is set in the period of World War I, and is inspired by historical events. Players can make use of World War I weapons, including bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War I
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fighting occurring throughout Europe, the Middle East, Africa, the Pacific, and parts of Asia. An estimated 9 million soldiers were killed in combat, plus another 23 million wounded, while 5 million civilians died as a result of military action, hunger, and disease. Millions more died in genocides within the Ottoman Empire and in the 1918 influenza pandemic, which was exacerbated by the movement of combatants during the war. Prior to 1914, the European great powers were divided between the Triple Entente (comprising France, Russia, and Britain) and the Triple Alliance (containing Germany, Austria-Hungary, and Italy). Tensions in the Balkans came to a head on 28 June 1914, following the assassination of Archduke Franz Ferdin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2mm Kolibri
The 2mm Kolibri (also known as the 2.7mm Kolibri Car Pistol or 2.7×9mm Kolibri) was the smallest commercially available centerfire cartridge,Barnes, Frank C. Cartridges of the World. DBI Books, 1976, p.146 patented in 1910 and introduced in 1914 by Franz Pfannl, an Austrian watchmaker, with financial support from Georg Grabner. It was designed to accompany the Kolibri semi-auto pistol or single-shot pistol, both marketed as self-defense weapons. The name is derived from '' Kolibri'', the German word for hummingbird, which is among the smallest of birds. Background The cartridge weighs 5.3 grams (82 grains), measures 3.6 millimeters (0.14 in) at its widest point, and 11 mm (0.43 in) from the base of the primer to the tip of the bullet. The cartridge is headspaced on the mouth of the case. The bullet itself masses 0.2 g (3 grains), and is estimated to have a normal muzzle velocity of , resulting in a muzzle energy of 4.0 J (3 ft-lbs).*Wilson, R. K. ''Te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Headspace (firearms)
In firearms, headspace is the distance measured from a closed chamber's breech face to the chamber feature that limits the insertion depth of a cartridge placed in it. Used as a verb by firearms designers, ''headspacing'' refers to the act of stopping deeper cartridge insertion. The exact part of the cartridge that seats against the limiting chamber feature differs among cartridge and gun designs. Davis, William C., Jr. ''Handloading'' (1981) National Rifle Association pp.67-69 Bottleneck rifle cartridges headspace on their case shoulders; rimmed cartridges headspace on the forward surfaces of their case rims; belted cartridges headspace on the forward surfaces of their case belts; rimless pistol cartridges headspace on their case mouths. When headspace is larger than the cartridge case, there is front-to-back cartridge wiggle room when the breech of the gun is closed. This extra space is called ''head clearance''. Many, including some major manufacturers, confuse head clea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austria-Hungary
Austria-Hungary, often referred to as the Austro-Hungarian Empire,, the Dual Monarchy, or Austria, was a constitutional monarchy and great power in Central Europe between 1867 and 1918. It was formed with the Austro-Hungarian Compromise of 1867 in the aftermath of the Austro-Prussian War and was dissolved shortly after its defeat in the First World War. Austria-Hungary was ruled by the House of Habsburg and constituted the last phase in the constitutional evolution of the Habsburg monarchy. It was a multinational state and one of Europe's major powers at the time. Austria-Hungary was geographically the second-largest country in Europe after the Russian Empire, at and the third-most populous (after Russia and the German Empire). The Empire built up the fourth-largest machine building industry in the world, after the United States, Germany and the United Kingdom. Austria-Hungary also became the world's third-largest manufacturer and exporter of electric home appliances, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hummingbird
Hummingbirds are birds native to the Americas and comprise the biological family Trochilidae. With about 361 species and 113 genera, they occur from Alaska to Tierra del Fuego, but the vast majority of the species are found in the tropics around the equator. They are small birds, with most species measuring in length. The smallest extant hummingbird species is the bee hummingbird, which weighs less than . The largest hummingbird species is the giant hummingbird, weighing . They are specialized for feeding on flower nectar, but all species also consume flying insects or spiders. Hummingbirds split from their sister group, the swifts and treeswifts, around 42 million years ago. The common ancestor of extant hummingbirds is estimated to have lived 22 million years ago in South America. They are known as hummingbirds because of the humming sound created by their beating wings, which flap at high frequencies audible to humans. They hover in mid-air at rapid wing-flapping rate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
