I've been hitting the Academy on my way home from work 2-3 times a week and almost every time I've been able to walk out with at least one box of ammo I was after. I've scored .223, 5.56, 7.62 x 39 and .40.
I admit it's a hassle, but since they moved it up to the front counter I'm in and out in 5 minutes.
My girlfriend works around the two WM's in Norman. She says that they get daily shipments but cant sell ammo till 7 AM. She has luck finding pistol ammo for us. She says people get there at 6:30 and wait in line. That frickin crazy!