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Military Guns and Ammunition

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This is intended for people interested in the subject of military guns and their ammunition, with emphasis on automatic weapons.

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Swiss twin 34mm AA gun (post-WW2)   Army Guns 20+mm

Started 1/3/19 by Petrus_Optim; 651 views.
In reply toRe: msg 2
Petrus_Optim

From: Petrus_Optim

13-May

At https://naboje.org/en/node/13703# there is some info on a 40x270 cartridge by Hispano-Suiza. Original Czech description may be translated as follows:

"An experimental cartridge built in Switzerland in the late 1940s, probably for an anti-aicraft cannon. During trials it developed a muzzle velocity around 1200 mps. Further information on that project remain unknown".

It's interesting that the Czech website is the only place over the Internet that contains any remark on the 40x270.

Which gun was this cartridge intended for? Was it a derivative of the HS-840 (for 40x239B) or quite a different design? Obviously its ballistic performace is interesting too.

Any thougths?

BR

Piotr

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