A charge of medium ballistic performance, the development of which took place during WWII in Zbrojovka Brno under the leadership of Alois Farlík. Directed by the Koucký brothers, a small ZK 423 machine gun and an automatic carbine ZK 412 were created for this charge. It was similar in size and performance to the German 7.92 x 33.
The approximate form can be reconstructed only according to the charge chamber of the only preserved specimen ZK 412. The most noticeable difference is the length of the cartridge case, which is 2 mm longer than its German counterpart. 8 mm Rapid had a smaller neck diameter (by 0.1 mm), a higher neck (by about 1 mm) and a different length L1 see photo.
Further more detailed information was probably not preserved.
Strelecký magazín 10/97 - Jan Skaramoušský Project ZK412
nemecký 7,92x33
Rez nábojou komorou ZK 412.
URL : https://www.valka.cz/8mm-Rapid-Zbrojovka-Brno-t35739#132386
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reprinted from rifle magazine 2/2003
photo hub probably won't get..
URL : https://www.valka.cz/8mm-Rapid-Zbrojovka-Brno-t35739#132435
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Reklama
I dare a few remarks. No need to derive the dimensions of this hub from the drawing chamber, in the archives of PS has survived several drawings, of which I'm one photograph. The charge was developed as an "8mm pistol cartridge RAPID" and so I think that is incorrectly ranked. One colleague started work on the production of several replicas and so if the work succeeds, I'll put a picture. Drawing used from the book "Zabudnutá munička on považí" author Karol Smatana..
URL : https://www.valka.cz/8mm-Rapid-Zbrojovka-Brno-t35739#391231
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8mm Rapid
The work in total was a success although some of the details do not match exactly. On the left is the bullet 7,92 x 33, middle is 8mm Rapid and to the right is the charge of the 7.62 x 39. It's about the bullets-reduced (middle) ballistic performance, according to findings from the beginning of the 2. world war. Photo by author..
URL : https://www.valka.cz/8mm-Rapid-Zbrojovka-Brno-t35739#413009
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