Swung in to Walmart to pick up some corn for my pet squirrels and walked by the ammo case. I knew there wouldn't be any 22's but I noticed a new sign. It said that ammo would be put in the ammo display starting at 8 am and at different times thereafter during the day. The 3 box limit was only on 22's now.
So it appears they are trying to stop those that are getting there at 8 to clean the shelves by staggering the stocking times.