Yeah, but they’re really just inexpensive military mild steel core, cheaper than lead core. The AP thing was just a pretext for banning an inexpensive ammo source. Real AP ammo is going to be depleted uranium or have a hardened tungsten carbide penetrator. Forgive my pedantry if you know this already, it’s just the “steel core = AP” thing is a pet peeve, so I never miss the opportunity to blather about it in case anyone not in the know reads this. :)
You are correct on all points, and thanks for posting this information.