again some interesting 8x50R ammo for sale and I think its a good idea to safe the pics as a reference

http://www.egun.de/market/item.php?id=3413263

Georg Roth softpoints, headstamp 19/1/18/GR
maybe sporting ammo load with WW 1 surplus brass

http://www.egun.de/market/item.php?id=3415935

this was the last hirtenberger ammo made with 12,7 g / 196 grs softpoint bullets around 1990 for some years

http://www.egun.de/market/item.php?id=3412950

also Georg Roth made sporting ammo but with the rare hollow point bullet 19/1/03/GR

box have a "F. HARDER" stamp, maybe the gunmaker who sold it

the old kynoch ammo
http://www.egun.de/market/item.php?id=3385562

and
http://www.egun.de/market/item.php?id=3413241

very collectible item from Peterlongo/Innsbruck
8x59R cartridges and handwriten on the box "Mannlicher M 95 Bleigeschoß" - lead bullet

looks like a modification for the old-fashioned handloader and bullet caster who had wish to stay with lead bullets in his mannlicher. the short neck of the 8x50r will not hold a lead bullet very well and 8,5mm sound right for a 8,38mm barrel.
the neck on this cartridge looks like it could fit into a common 8x50R chamber so the lead bullet have to be of the heeled type.