Dicks is less dick-like elsewhere. The one in Westminster, MD will let buy handgun ammo off the shelf, no clerk involved. But the one in Fairfax, VA (just a mile from NRA HQ) used to keep all handgun ammo (including .22 LR) locked behind the counter.
But buying a gun at any Dicks is a chinese fire drill involving multiple sales reps, a manager and red tape. It's worth paying a few extra dollars elsewhere to avoid the hassle.
Shotgun shells, 30-30 and 30-06 on the shelves at my WV Wally-World. Pay cash and you are out the door.
But .22LR-L-S you have to show a DL to purchase...reason being you must be 18 as they can be used in handguns.