From this prewar “arms race” came a number of competing designs, amongst them the Polish Wz-35, the German PzB 38, the British Boys Rifle as well as the Solothurn series of commercial guns. A GI would “kimchi rig” an add-on to gain a mechanical advantage. http://forums.gunboards.com/showthread.php?314689-Article-on-Type-97-20mm-Anti-tank-Rifle. Best selling Price, low to high Price, high to low Date, old to new Date, new to old Sort . There’s no part of the bolt going into the chamber though. 7×66 is as follows: 9,0g (139grs) @ 980m/s. Forgotten Weapons is a blog and YouTube channel started in 2011 by firearms enthusiast Ian McCollum. At this point, the gun was ready to fire. Thus one can with some imagination figure how this related to pressure-time curve during its stay in chamber. The bolt carrier, continuing forward, would lock the action by forcing a locking piece into cutouts located in the sides of the receiver. Today’s article comes to us from, Christopher Bailey, who is particularly interested in finding information and photos of these kinds of antitank weapons. So in practice it’s timing of ignition is little different to a fixed firing tit. I think, I should remind original purpose of this feature. Barrel length: 41.875 in (1064 mm) When one also considers the complexity of the gun and the difficulty of manufacture, it isn’t surprising that production of the gun was terminated in 1941 after some 1100 had been completed. Nothing that could dignify the term “road” actually existed. It may sound bit couterproductive vis-a-vis with what you are saying, but I cannot find other interpretation for that. I really appreciate learning about these monsters, and the big end of what one man can aim and fire, and have to admit that I don’t have much background knowledge of the cannon sized anti tank rifles. This was accomplished using a rear peep sight and a blade front sight. A remote controlled weapon station (RCWS), or remote weapon station (RWS), also known as a remote weapon system, (RWS) is a remotely operated weaponized system often equipped with fire-control system for light and medium-caliber weapons which can be installed on ground combat vehicle or sea- and air-based combat platforms. It is good to keep closer to subject and not to get distracted. I’ve read (Small Arms Review?) Perfect for taking out groups on infantry and light vehicles. To me, while one time or other touched on the subject, is existence of this particular design quite surprising. save. Ian with Forgotten Weapons fires the gently recoiling popgun that is Aimo Lahti's 109-pound semi-automatic rifle on skis made to assassinate tanks. I suspect that most of the Japanese troops who used this gun never lived long enough to say what they did in so far as actual field usage goes. With the lack of Luftwaffe opposition over Normandy, both were rather quickly discarded, although the Free Polish Armored Division liked using theirs as a form of assault gun. I believe the gun would be pretty comfortable to shoot. First seeing combat against the Red Army at the Battles of Khalkhin Gol in 1939, the Type 97 proved to be a disappointment to the Japanese military, with its 20mm round performing poorly against Soviet BT series tanks. The Solothern (20mm) propelled the barrel and action forward when the trigger was released, recoil first had to slow and stop them, before making them travel back. http://www.patreon.com/ForgottenWeaponsCool Forgotten Weapons Merch! We are passionate ⦠– improve accuracy My problem is information retention; often I have to go back into items I once knew and their knowledge in time faded. One of Baryshev designs was also 30-mm bipod grenade-launcher. This is somewhat surprising given the fact that wartime American testing demonstrated that the projectile could pierce about 30mm of armor at 250 meters range. Figures I saw for one of the typhoons which hit Taiwan after its last big earthquake, were of over ten feet of rainfall in 72 hours in the mountains. you can see photo titled Ammunition for the Oerlikon family, The heavy recoil spring is to accelerate and decelerate the bolt. Posted by 3 hours ago. So, not surprising that there was confusion about this! Rifling: 8 groove Once fully to the rear, the sear would again catch on the bolt carrier, locking the action open until the trigger was pulled once more. Thank you! 20x42 mm cartridge. Logo Thermos - Black. Length, traveling position: 99.5 in (2527 mm) share. Rebated rim cases are made for the extractor hooks to catch the base in around a smaller radius than the case body for the extractor lever to fit in the fully supported chamber. Forgotten Weapons. Rebated case heads were patented by Westley Richards / Leslie Taylor, between about 1900 – 1910. It took use of combination of squeeze-bore technology with tungsten core. Hence assuming 7.62 mm for .30-06 upscaling it to 20 should give ~18 increase of bullet mass that is 2700 grains, but as you noted in reality 3718 grains, that mean 20 mm use different shape of bullet. My father was the gunner on one of these during WWII and he used a Mark 14 “electric” “heated” gunsight. From Janes: "The Helenius RK20 APH 20 mm anti-matériel rifle is a scaled-up version of the 12.7 mm APH RK97, firing the obsolete Russian 20 × 99R ShVAK cartridge, which was originally designed for the Russian Federation ShVAK aircraft cannon dating back to the early period of the Great Patriotic War (1941-45). Thanks so much for your contributions, Chris! which is also 30-mm caliber. Dad remembered that attack – there was debris around the forward 40mm quad mount afterwards when they stood down and he walked onto the forecastle to get some fresh air. – decrease recoil One of the other advantages of the .425’s rebated rim was charger loading, from an ordinary Mauser stripper. Westley Richards are currently turning out double rifles with those ejectors, and probably turning out double rifles at a greater rate than any of the other British makers. This one seems a bit big and clunky, but I love how it’s put together. 20×70 Oerlikon case is parallel sided. Wouldn’t have thought there’d be too much chance of a cook off in this style of weapon. Since a rear-mounted mono-pod is used and due to the fact that the thing weighs 150 pounds, I think the only time the gun is going to move is under recoil from the fired round. do you have any of the books or papers for the 20mm i remember reading about the 40mm guns but you don’t have any links to info on the 20 mm documentation. We are passionate about firearm design, manufacture, and history. The first such gun, the Mauser 1918 Mauser T-Gewehr, was itself simply a scaled up Model 98 rifle. – decrease mass ⦠九七式自動砲: translation model 97 self operating system, Friends, In past times, I have lived and worked in similar conditions and understand perfectly what it entails. Thanks for correction. If you want to know how to make extra bucks, search for: Ercannou’s essential tools best adsense alternative, I have checked your page and i’ve found some duplicate content, Q, The system stripped away the URL. Beats me what it says though, most of it is Kanji. Elbonia Poster. Please consider, Japan’s Interim Handgun: The “Papa” Nambu, http://forums.gunboards.com/showthread.php?314689-Article-on-Type-97-20mm-Anti-tank-Rifle, Just wanted to share this with my shooting Brothers here! The XM25 Counter Defilade Target Engagement (CDTE) System, also known as the Punisher and Individual Semiautomatic Air Burst System was an airburst grenade launcher with programmable ammunition derived from the XM29 OICW.It was fielded to soldiers serving in the War in Afghanistan in 2010, after which malfunctions and 2013 program budget cuts delayed ⦠Forgotten Weapons Maven is a confederation of independent bloggers, journalists, activists, and subject matter experts spanning across the spectrum of topics. There has been a huge uptick in scammers trying to link to sites to sell clones of Forgotten Weapons Merch. Hello, all is going sound here and ofcourse every one is sharing facts, :):):). At Forgotten Weapons I think the most interesting guns out there are the most obscure ones. Elbonia Hoodie. In each case, the mount and firer got almost half of the recoil before the round even fired, and slightly more than half after it fired – this spread the recoil over a far longer time period, making it a more bearable shove, rather than if it were all to come as one big, tooth loosening kick straight after firing. £2.50 | Mechanical Goodies, Pack of .50cals Guns 20mm. Advanced Primer Ignition, impressive action. Chambered for a newly developed 13mm round, the T-Gewehr was a capable and effective battlefield rifle, and further development of this line of weapons was a reasonable solution at the time. $24.99. That is to prevent any slam firing if the firing pin was to break loose. © 2020 Forgotten Weapons.Site developed by Cardinal Acres Web Development. By the time the lead elements actually came up against the meager Allied defences, they were so worn out and reduced in numbers that they could not mount any sort of real offensive. I’m glad this isn’t one of them. The idea was to use the curved 20mm section as a sort of trough to redirect the bullets. “Barnesâ ridiculously nationalistic cartridges of America” Length, firing position: 82.5 in (2096 mm) Its projectile also had a muzzle velocity of around 2800 feet per second. Your email address will not be published. 7×66 vom Hofe (single f) is child of .404 Jeffery, it was developed specifically to fit into Husqvarna-Mauser rifle. These rifles, all using different mechanisms, show off a variety of design compromises. Despite its limitations, the Type 97 continued to be a front line weapon throughout the war in the Pacific, usually being employed in a prepared static defense position. Still formidable gun though. Thanks Ian for this video. that’s really fine, keep up writing. Traversing the gun was actually somewhat difficult, requiring the gunner to lift the rear of the heavy gun with his shoulder before shifting it left or right. A college tutor I studied under had lived in PNG for a number of years. In 1st and 2nd Edition D&D, weapons were classified as Small, Medium, or Large and by the type of damage: Slashing, Piercing or Bludgeoning. I don’t think any of the highlands between Australia and continental Asia can be described as “dry”, but the mountains of New Guinea take that to an extreme. “fully supported in chamber” 16 comments. It entered service in 1938 and first saw combat in Nomonhan. It ⦠In 1955 vom Hofe trademark go into possession of Walter Gehmann, high-class sport shooter, weapon and ammunition-designer and introduce 7×66 in 1955. There are contemporary Leslie Taylor patents for magazine mods to raise the radically rebated head high enough for reliable feeding in a bolt action, and for extractors and ejectors to handle rebated case heads in double rifles. As the projectile traveled down the barrel at 2,640 feet per second, some of the propellant gas was diverted into a regulated gas tube assembly located underneath the barrel.
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