Getting helped well at the Wal-Mart down the street from my apartment is about a 50/50 chance.
There are at least two people there who know what they're doing. The first is an older gent, probably in his late 50's, early 60's. You tell him what you need, he can find it on the shelf quickly, knows what it's for, and doesn't ask stupid questions. The other person is a woman who could be the first guys mother. She has to be at least 70, maybe older. But, you tell her you need some ammo and she knows where it is. You ask her if they have any 12 ga. game loads in the back, and she'll tell you about the first time she used a 12 gauge to go duck hunting and how the recoil felt. She's pretty cool.
Most of the other employees, to include managers, are about as dumb as a box of rocks. You tell them what you want and it's a game of left, up, back down, right, no, right till you get them to the ammo.