Maximus,
I'm also reloading. I suggest you stockpile the bullets that your rifle is regulated with. For my only "big bore" I got a pile of Woodleigh bullets to cover a lot of shooting - comforting to know I won't run out of bullets any time soon.

An acquaintance used some in his Heym 450/400-3 NE. Now it's hard to get the Hornady ammo in Sweden, second time of no delivery and the gunshop doesn't know when next supply will arrive - time to crank the reloading press.