Ted, could you scan that paper?

I found yet another one here.
http://www.gournetusa.com/Ideal.htm

As for the discussion about proofing loads, the British did exactly the same, as they proofed the barrels with Black, and the guns sometimes with Schultze or EC or Rifleite, or Amberite or Cordite... per the maker's request.

In general the French makers battled themselves with heavier proofs to the point of silliness. This seems weird, but the majority of shells were home-made and hunters were pushing the envelope to get that hare at 60 yards, so they liked heavy proofs.

Another remark concerns the equivalence of pressure measurements.
A French kg/cm2 number might not be equatable to xxx PSI, as the measurement methods might be completely different. I don't have any data on this but one should be careful with simple translations.

Certainly, all usual precautions apply to an old gun.

Best regards,
WC-