Thanks for posting and yes, please show pix if you can.

Ken Waters noted a similar identification and nomenclature used with 9mm Mauser/Mannlicher. In his case, IIRC, he miked all the relevant dimensions and found they were sort of a "cross-breeding" of the two rounds.

I think it is in Pet Loads.

Very interesting, and really, a big blue nose 236 grain bullet would do just fine in the 8mm Mauser for a lot of game!