That is the deal with my indoor range. They only care about steel core ammo. I know for a fact they reload (or have them reloaded somewhere) the cases to sell as range ammo. No big deal to me, it keeps their costs down. They aren't strict at all about casings. I have been to ranges where if it hits the ground, it cannot be picked up. If you want to keep your casings or be a range rat and scarf them up, it is allowed. With one caveat: don't go ahead of the firing tables to get brass.