Wolf ammunition uses steel casings and steel jackets, but apparently does not use a steel core (at least according to what's posted at Lucky Gunner). Most guides I've seen written about steel targets indicate that using "steel ammunition" would damage the target, but I don't know if they mean "steel core" or "steel anything." For instance, the safety agreement from TacStrike says only use "high quality duty/service ammunition" and then gives upper bounds on bullet velocity, but that's it.
So, my question is this: assuming you're using steel targets that are at least AR 500, can you should Wolf ammunition at them without damaging the target?