A guy next to me was shooting 8mm Mauser Olympic ammo. He had some experiences that have discouraged my from using this brand. Several of these rounds exhibited abnormally high pressure; the primers backed out of the primer pockets, he had to hammer the bolt to open it, and he could feel substantially more recoil than on his other rounds. He basically quit shooting that brand on the spot and switched over to surplus Turkish 8mm, which is corrosive but much more consitent in its loading.

I've read other posts about Olympic ammo that seemed negative, but can't remember specifics. I'd be cautious with it, just my 2 cents worth.