Anyone have any ideas on where to find load data for this cartridge? Or, if you have any to share, please email me.

Thanks,
mjg

A buddy of mine has a rifle chambered for this round and handloads for it. I'll get a hold of him and get back to you.

For my Holland&Holland bolt action (on a Mannlicher 1893 action) I use 160gr Hornady RN , 42gr Vihtavuori N 160 , COAL 77mm. Gives me 2300fps and very good accuracy.

For what it's worth:
these will used in a Mauser M1871 single shot bolt action rifle with a 20 inch barrel which the French St. Ellis Arsenal converted to the 6.5 x 53.5mm Daudeteau.
Thanks in advance,
mjg