If it makes you feel any better, my Walmart (down in New Mexico) just got 6 boxes of Federal 100rd packs of .40s&w and 9mm. That was their ENTIRE ammo shipment and the guy told me it was on the shelves a bit after 8am.

When I arrived around 8:45am that same day, there was only 2 boxes of each left. I bought one of each. Sure, in hindsight I should/could have bought all of it (since there was no limit), but I wasn't buying for panic reasons, I simply want to go to the freaking range and shoot some lead down range!