I recently ran across a Mauser 98 mannlicher stocked rifle in 6.5x61mm DWM . Any of you blokes ever had any experience with this cartridge ?

Also any of you guys know of a set of dies floating around for one of these ?
My usual spots here in the states don't seem to have that one in their listing of custom dies .

All I've found on it so far say it was made in the 30's by DWM and didn't have much of a following . Hence my lack of finding info or a company here in the USA that lists this cartridge .