I know they allow steel cases, just not steel core ammo. I dont know much about wolf ammo, but basically they just run a magnet over the bullet. If the bullet sticks to the magnet (the bullet, NOT the case), then they say you can't use that ammo.
Be sure to stand the bullet up on end and touch the magnet to the tip of the bullet and not just run it over a bullet sideways, that way you can differentiate between the bullet or the casing if the magnet pulls. Like FALGuy says steel cased is okay, steel CORE is not.