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Help 20x133B

My information speaks of an existing 20x133B (rim 33 mm) as a French Model 1935.
 
Yes projectile it 20mm vulcan M55A2 01-AIY66PY
No sheath markings
appears not manipulated
If certain measures are these. 20x133B exact 20x133,5B
 
Comparison
 

Attachments

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Last edited:
very interesting - any marking on the 20mm case in the rim or on the belt?
Case looks like laquered steel?
 
It looks like in your pics that i had a crimp at the same position as the DEFA, yet is still longer?
 
Thanks Dave, all that remains is put here information.
For that we give for help and if you know ... :)
A pity not to have more information ...: (
Things that happen.
a greeting
 
hasag said:
Thanks Dave, all that remains is put here information.
For that we give for help and if you know ... :)
A pity not to have more information ...: (
Things that happen.
a greeting
Click to expand...

Hi hasag, I don't have any information on it. Its listed as "unknown" in both the cartridge lists I use.
I would agree with Harley though . It would make sense for the Defa experiments to have been done in 20mm as well as 30mm (I don't have any evidence this was done though) in much the same was as the Mauser 213 and the Adens were developed.
You did very well to get hold of it, I've never seen one before.
Dave.
 
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