Everyday 8mm Mauser
This is a tough one. I can find Remington Core-Lokt hunting ammo in 8mm for $36/box. Plain ammo and no bargain. I can find Euro ammo for $50/box and up.
The Remington Core-Lokt is indeed 170 grain, loaded light for really old actions. (Yours is not old at all.) I find in my Portuguese Verguerio (not a Mauser action, but shooting 8mm) the Core-Lokts seem to have drop at 100 yards. I need holdover at that distance with the iron sights flat. This could be a sight issue, but I think it is a muzzle velocity issue.
So if you really do want something accurate at long distance you are into Euro price territory or reloading. As stated by HP, the Euro ammo is hot and uses the correct 195 gr pill.