When I asked the manager why there wasnt a sign telling customers that they had these types of ammunition she said she had been told by home office to not put up a sign until they told her too, it sounded like it might have been a conversation that happened a while ago..
Did you ask the mkanager why it was locked away, out of sight? That would have been my question.
My local Walmart is almost fully stocked on ammo. Lots of 9mm & .45, but still just little drabs of .380. Other stores in the area are back to "almost" normal too.