URL : https://www.valka.cz/CZK-9-mm-samopal-na-beznabojnicove-strelivo-t25835#414968
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Almost unknown weapon of post-war construction Ing. Jaroslav Holeček from ČZ Strakonice. The prototype was built by modifying the submachine gun vz. 247 for cartridge-free ammunition own design 9x30 mm.
Total weight of the weapon 2400 g Weight without magazine (32 rounds) 2205 g Weight of empty/full hopper: 195/454 g Length with folded armrest: 730 mm Length with folded back 472 g Barrel length: 365 mm Intentional length: 418 mm Theoretical cadence: 400 - 1000 r/min. Visors adjustable from 100-400 m to 100 m Total number of weapon parts: 39
In the world, the forward movement of the barrel was used only for four pistols (Mannlicher 1894, Schwarzlose 1910, Wesson and Winklar), but it was the use of resistance to the missile during the movement of the main (the missile during the flight of the main pulled it). However, this unstable element (the amount of friction) did not ensure the flawless and always the same operation of the weapon, so it was abandoned.
The submachine gun worked on the principle of long movement, mainly forward - the only construction in the world. In addition to this submachine gun Ing. On the same principle, Holeček designed an automatic 50 mm ten-shot mortar and an automatic pistol. Holeček's weapons worked on the principle of a long forward movement, mainly due to the pressure of the gases on the intermediate ring of the borehole, mainly behind the charge chamber.
Before firing, the automatic locking of the tension lever was released and the barrel moved forward, where it remained caught by the trigger tooth. After pressing the trigger, the return spring slid the barrel onto the charge fed into its path from the magazine, and at the end of its path, its match struck a firing pin located on a fixed closing plate. The pressure of the projectile gases on the annulus threw the barrel forward, where it was either caught by the trigger tooth or the action was repeated. The principle used allowed the use of a much longer barrel than other weapons with a dynamic conclusion, so significantly increased performance and accuracy. The weapon was shorter, simpler and lighter. The flawless function of the weapon was verified during tests, during which about 2,000 rounds were fired.
None of these weapons were introduced into production - although they were undoubtedly well ahead of their time - or perhaps that is why.
Source: interview Ing. J. Fencla with Ing. J. Holeček, published in Střelecká revui No.7/1985, p.9
URL : https://www.valka.cz/CZK-9-mm-samopal-na-beznabojnicove-strelivo-t25835#93870
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Reklama
I tried to scan, but because the draft is not worth anything, probably nothing more than I get. Only to get to the archive company, but.....
URL : https://www.valka.cz/CZK-9-mm-samopal-na-beznabojnicove-strelivo-t25835#106683
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