Here fragmentary images from some German report on captured French material.
And to my understanding wether at a French ammo testing facility/shooting range or maybe at Brandt company.
I been talking to several well connected Frenchmen but so far nobody was able to ID the document and let alone finding the full version in propper quality.
Anybody here who can tell more or is able to provide a digital version of the doc?
This is all I have found so far: