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Topic: 20 mm caliber


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In the News (Thu 24 Dec 09)

  
 20 mm caliber - Wikipedia, the free encyclopedia
Like most cannon ammunition, 20 mm caliber weapons are typically used against large targets such as vehicles, buildings, or aircraft.
Though effective against individual soldiers, 20 mm ammunition is so large and heavy that its effects are nearly all wasted on relatively small targets.
Cartridge type indicates the diameter of projectile and the length of the cartridge that holds it, for example 20×102 is a 20 mm projectile in a 102 mm long case.
en.wikipedia.org /wiki/20_mm_caliber   (360 words)

  
 COASTAL-RIVERINE-CRAFT-ARMAMENT
One of the 20 mm guns is mounted on the starboard side and the other is mounted on the port side.
The 20 mm gun on the PTF (and other small craft) was originally designed in the early 1930’s for use on aircraft.
The 20 mm gun may be mounted in an open mount arrangement, as on the PTF, or in an enclosed mount (fig.
www.eugeneleeslover.com /USNAVY/COASTAL-RIVERINE-CRAFT-ARMAMENT.html   (3389 words)

  
 Boulder Weekly | NewsandViews | LibertyBeat   (Site not responding. Last check: 2007-11-06)
The term.50 caliber means the bullet is half an inch in diameter, and 90 mm is about 3.54 inches.
A 20 mm (.787 inch) was available to shoot, but my wife and I contented ourselves with shooting a considerably smaller bolt-action.50, owned by a resident of Boulder County.
The.50 caliber is sometimes considered a "sniper rifle," but a common military sniper rifle is the.308, similar to the.30-06.
www.boulderweekly.com /archive/051905/libertybeat.html   (815 words)

  
 Dodge Caliber: little SUVs
Size-wise, the Caliber is similar to the Matrix, though it seems a bit wider and lower — like the Commander, it looks taller than it is; it isn’t all that high but seems to have nice interior space.
While the Caliber is neither as slippery as the first-generation Neon nor as light, both of which make its performance nowhere near as good as a stick-shift Neon, it has more cargo space, more passenger room, and higher safety and emissions standards...not to mention a high performance diesel option for Europeans.
The Caliber SRT-4 blasts the XRS out of the water, but is rated at the same acceleration as the Neon SRT-4; it is probably safer and easier to drive, though.
www.allpar.com /cars/dodge/caliber.html   (3714 words)

  
 Mecha In Car Wars   (Site not responding. Last check: 2007-11-06)
Medium autocannons are weapons of intermediate caliber (23-mm to 25-mm).
A gatling cannon is a multi-barrel weapon of the same caliber as the light autocannon.
Heavy autocannons range in caliber from 35-mm to 40-mm Although HAC shots cost and weigh the same as those for a medium autocannon, HAC rounds are of larger caliber.
novacw.com /mecha.htm   (6148 words)

  
 The 30 mm Ho-155 Browning
This gun was intended to replace the 20 mm Ho-5, using the same airframe space for mounting if possible.
The caliber was soon expanded to 30 mm, and development of the Ho-155 around the 30 x 115 cartridge began in 1943.
While a 25 mm projectile holds about 1.5 times the explosive of a 20 mm projectile of the same length, a 30 mm projectile holds 2.25 times the 20 mm, justifying the change.
www.j-aircraft.com /research/30_mm_ho155_browning.htm   (800 words)

  
 Sniper_rifles - The real meaning from Timesharetalk wikipedia   (Site not responding. Last check: 2007-11-06)
Before the introduction of the 7.62 × 51 mm NATO in the 1950s, standard military calibers utilised were the.30-06 Springfield (United States),.303 British (United Kingdom) and 7.92 × 57 mm (8 mm Mauser) (Germany).
These rifles tend to be semi-automatic, and of a larger calibre than anti-personnel rifles, using.50 calibre (12.7 mm, such as the.50 BMG and Raufoss Mk211) or even 20 mm cartridges.
The maximum range of common 7.62 × 51 mm NATO ammunition is a comparatively tremendous 3,725 meters, and both machine guns and sniper rifles are not able to use even half of the maximum range of the ammunition effectively, largely due to unpredictable atmospheric disturbance of the bullet flight path.
www.timesharetalk.co.uk /information.asp?k=Sniper_rifles   (4631 words)

  
 Aerospaceweb.org | Ask Us - Airborne Guns
However, there are many examples of much larger caliber weapons that have been fitted aboard aircraft in the past.
The M4 cannon was replaced by a lighter T13E1 75-mm cannon, and several more 0.50-inch caliber machine guns were added to the nose and pods mounted along the fuselage.
Also known as the "Tse Tse Fly," this particular model was armed with four 0.303-inch caliber machine guns and a single 57-mm cannon in the nose.
www.aerospaceweb.org /question/weapons/q0174.shtml   (1303 words)

  
 Antitank weapons used by the Finns in the Winter War, Part 1
Of the 37 mm AT-guns, 66 were lost in the Winter War for various reasons, a little over a third of the total number of 37 mm AT-guns.
The sights, the caliber and some manufacturing solutions were changed, but otherwise the gun was a close copy of the original German gun.
The Danish 20 mm automatic cannon, produced by the Madsen factory, was one of the most successful light cannons of the 1930s.
www.winterwar.com /Weapons/FinAT/FINantitank.htm   (2480 words)

  
 Antitank weapons used by the Finns in Winter War, Part 2
Initially a 13 mm caliber was the favorite alternative but in 1939 a decision was also reached to also construct two 20 mm weapons for tests in mid 1939.
Theoretically, the difference of muzzle velocity and penetration between the 13 mm and 20 mm wasn't big, but the 20 mm round had superior fragmentation effect when it penetrated the armor.
While the caliber of the weapon was quite small, the gun was said to be adequately effective against the T-26 tanks, and lighter vehicles.
www.winterwar.com /Weapons/FinAT/FINantitank2.htm   (3083 words)

  
 Korean War Naval Chronology, January-April 1953
Yo-do received eight rounds of estimated 75/76 mm shore battery fire; Sin-do received 14 rounds of unknown caliber fire; and Hwangto-do received 19 rounds of mixed 81 mm mortar-l05 mm for a total of 41 rounds on all three islands.
Hwangto-do received eight rounds of 81 mm mortar and one round of 75/76 mm; Sin-do received three rounds of unreported caliber; No-do received four rounds of 10 mm; and Tae-do received eight rounds of 10 mm and four rounds of 8l mm mortar fire.
Tae-do received 11 rounds of 82 mm, Sin-do received 10 rounds of 105 mm; Hwangto-do received 11 rounds of 107 mm; Yo-do received 16 rounds of 76 mm; and the USS Owen (DD536) was subjected to three rounds of 105 mm.
www.history.navy.mil /wars/korea/chron53a.htm   (7768 words)

  
 ENEMY ORDNANCE MATERIEL 45
These will not be described because they were not intended to be casualty producing in frontline areas and are not significant in the casualty surveys which make up some of the later chapters of this volume.
20) and AA weapons do not normally function as primary casualty-producing instruments of war against ground troops, they must be considered here because of the widespread use by the Germans of their 8.8 cm.
In all the reorganizations, the trend was clearly toward economizing manpower and simultaneously increasing firepower by a careful distribution of large numbers of automatic small arms, by lowering the number of mortars, AT guns, and tanks, and, at the same time, by increasing potentially their calibers and weights.
history.amedd.army.mil /booksdocs/wwii/woundblstcs/chapter1.2.htm   (9434 words)

  
 VPC - Voting From the Rooftops - Section One
The fifty caliber's ability to be deployed by one individual and give that person the capability of discretely engaging a target at ranges of over one mile away are definitely alluring from a tactical standpoint.
To appreciate the threat of the 50 caliber sniper rifle, it is necessary to consider its extended accurate range, its exceptional power, and the extraordinarily destructive characteristics of special 50 caliber military ammunition widely available on the civilian market.
"ball," "match," "armor-piercing," etc.), the typical 50 caliber bullet is.510" in diameter by 2.27" in length, the case is 3.9" in length, and the overall length of the assembled round is 5.425".
www.vpc.org /studies/roofone.htm   (3984 words)

  
 30 mm caliber - Wikipedia, the free encyclopedia
Ammunition of 30 mm caliber are a common autocannon round used by the armed forces of NATO and former Warsaw Pact nations and by export common in other armies as well.
The cartridge size varies in length over the range of 8 to 12 inches (200 to 305 mm) while the projectile is 4 to 6 inches (100 to 150 mm) in length.
Unlike the smaller 25 mm round, the 30 mm is not typically an anti-personnel weapon round.
en.wikipedia.org /wiki/30_mm_caliber   (223 words)

  
 .308 Caliber Armor Piercing Ammunition, .308 Caliber Armor Piercing Ammunition information   (Site not responding. Last check: 2007-11-06)
Lapua Magnum, the 7.62 mm, the.308 Winchester, the.243 Winchester...
Related terms are ar 15 and parts, 308 caliber armor piercing ammunition, snider carbine for sale, ar15 bayonet lug, and fn fal rifle scopes and bases.
from the M40A1.308 caliber sniper rifle to the M40A3...
www.ammunitionammo.com /ammunition2/308caliberarmorpiercingammunition   (1131 words)

  
 Military
The main trend in constructing and production of this type of ammunition is the cartridges with a high piercing and armor piercing capabilities.
The cartridge 7N10 surely penetrates a steel slab of 16 mm in thickness at a distance of 100 meters and some elements of titanic alloys armor vests at a distance of 200 meters.
The cartridge 7N13 penetrates an armor slab of 10 mm in thickness at a distance of 200 meters.
www.barnaulammunition.com /military.htm   (107 words)

  
 (via CobWeb/3.1 planetlab2.isi.jhu.edu)   (Site not responding. Last check: 2007-11-06)
It is, to the last minute detail, an exact copy of a Swedish General Issue musket, originally built at Jönköping Arsenal, and presently part of the collection of the Royal Army Museum in Stockholm, where my drawings and measurements of the gun were also executed.
Caliber is 20 mm with a breech plug made tocompletely seal off the fl powder residue from the threads.
The ram rod has a spring steel device at the front end, used to scrape the fl powder residue from the interior of the barrel to facilitate reloading.
www.musketandrifle.nu.cob-web.org:8888 /start.htm   (1046 words)

  
 NTW-20 ANTI-MATERIEL RIFLE
The rifle is built around two cartridges: the South African MG151 20x83.5 mm and the Russian API or API-T 14.5x114 mm.
Optionally, and for the purpose of decreasing cost of training, the rifle can be made in caliber 12.7 mm.
In 14.5-mm form the cartridge fired is the Russian 14.5x114 in API and API-T form; muzzle velocity is 1,800 m/sec and a maximum effective range up to 2,300 meters.
www.club.guns.ru /eng/ntw20.html   (953 words)

  
 USS Slater, Weapons System, 20mm (via CobWeb/3.1 planetlab2.isi.jhu.edu)   (Site not responding. Last check: 2007-11-06)
The only current free-swinging weapon was the.50 caliber machine gun, which was lacking in range and firepower.
Reception was enthusiastic as a more than welcome replacement for the.50 caliber, production was slow to quickly replace all of the.50 Cal, so in the early months most air-defenses continued to rely on the.50-caliber.
The 20 millimeter guns were the smallest anti-aircraft guns carried aboard the USS Slater.
www.ussslater.org.cob-web.org:8888 /weapons/20mm.html   (667 words)

  
 Answers to Questions About Watches - Questions in Time - Watch Industry Questions and Answers
From Piaget Personalized for Cartier by Piaget from its new family of ultra-thin movements, this 18-jewel mechanical movement measures 2.1 mm in height and is composed of 104 parts.
The 500P is a 26-jewel, automatic mechanical movement measuring 3.4 mm, which will be used by Piaget for both its "form" and ladies watches.
The result is the 430MC, a new ultra-thin caliber from Piaget's new family of movement.
www.europastar.com /europastar/watch_tech/piaget.jsp   (502 words)

  
 AIRGUN PROJECTILES
5 mm (".20" caliber") pellet and the HandN 5.05 mm pellet for Sheridan
Technically speaking, BB is now an official U.S. caliber, often referred to as.177”, or 4.5 mm, but actually having, by governmental standard, a maximum diameter of.175" and a minimum diameter of.162".
Lead airgun shot commonly are available in BB (.175" or 4.4 mm),.177” (4.5 mm),.20” (5.0 mm),.22" (5.5 mm), and.25” (6.35 mm) as well as many special sizes, both larger and smaller.
www.beemans.net /airgun_projectiles.htm   (6028 words)

  
 How can the caliber of a stenosis be evaluated?
The most common clinical-radiographic procedure used to estimate functional esophageal lumen diameter is the use of a standard 12.5 mm barium tablet that passes through a normal esophagus in less than 20 seconds.
Lumen diameters greater than 13 mm up to 20 mm can be associated with solid food dysphagia and can be assessed further by using a larger bolus such as a marshmallow which will also produce a sensation of delay when its passage is impeded.
The diameter of the largest tablet that passes is used as the estimate of lumen size.
www.hon.ch /OESO/free/Vol_5_Eso_Junction/Articles/art191.html   (357 words)

  
 JG-PP/Low-VOC Coatings for Medium Caliber Ammunition Summary Page
In addition, coatings for medium caliber ammunition must aid in protecting the ferrous projectile materials against corrosion.
Coatings for Medium Caliber Ammunition project was intended to reduce or eliminate
At that meeting the JWG agreed with the recommendation and issued and action for the completion of a Project Closeout Report to document all testing activities and results, lessons learned and recommendations, in an effort to reduce duplicate efforts, should the project be reopened at a later date.
www.jgpp.com /projects/ammo/ammo.html   (375 words)

  
 B Biographies
All 20 mm guns fired at the approaching dive bomber, which dropped its bombs but overshot the ships.
The vessel was equipped with four 3-inch 50 caliber guns, one 4-inch 50-caliber gun and eight 20 mm guns.
On December 22, 1943, he was sent to Armed Guard School in Gulfport, Mississippi, and on January 20, 1944, was transferred to Shell Beach, Louisiana, for gunnery training on the 20 mm 50 caliber and the 3-inch 50 anti- aircraft gun.
www.armed-guard.com /biogb.html   (10547 words)

  
 NDM Article - Back to the Drawing Board: Army Rewrites Small Arms Plans
The M16 5.56 mm assault rifle—the standard combat weapon for all services since the Vietnam War—is considered too long, with its 20-inch barrel, for close-in urban fighting.
The OICW is envisioned as two weapons in one, a rifle that fires a 5.56 mm round and a grenade launcher that expends a 20 mm air-bursting munition.
Barrel lengths range from nine inches for a compact carbine to 20 inches for a sharpshooter rifle.
www.nationaldefensemagazine.org /issues/2005/Jul/Back_to.htm   (1437 words)

  
 Snipers Paradise
The original purpose of development was to create one man-operated rifles with high caliber, high muzzle velocity and high accuracy, for special tasks.
Task of the destroyer rifles is destroying entrenchments, vehicles, APCs equipped with 15 mm(with M3 it is 20 mm) within range 1500m.
Russian caliber rifles can be attached to the Russian PKM machine gun tripod too.
www.snipersparadise.com /equipment/rifles/gepard.htm   (1012 words)

  
 Op-Ed: Gun Control Harming U.S. Troops
Firearms maker Barrett has developed a 6.8 caliber rifle for civilian and police use, Farnam said, in anticipation of a military need.
The problem some critics see, however, is that the new rifle is chambered for the exact same lightweight.223 (5.56 mm) round.
But it fires a kinetic energy 5.56 mm round, and also comes with a 20 mm launcher that fires air-bursting grenades (to reach enemies behind defensive positions).
www.gunowners.org /op0426.htm   (1049 words)

  
 D-20 / Type-66 152-mm Towed Gun-Howitzer
The D-20 152mm Gun-Howitzer was built shortly after the end of WWII by the F. Petrov Design Bureau in the Soviet Union and was first seen in public during the 1955 May Day parade in Red Square, Moscow.
The D-20 is a very large gun, equating to 6-inch caliber, and is heavy for a simple towed carriage.
Its restricted mobility, however, is somewhat compensated for by its range of 17,230 meters.
www.globalsecurity.org /military/world/russia/d-20.htm   (432 words)

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