I think it's true too. When I was working up there you could go into the Walmart in Liberal, KS and buy ANY 12ga or 20ga shotshell you could possibly want. Steel, buck, light target, heavy target bird loads, slugs, steel, bismuth, you name it. And several .410s, 16ga and 28ga too. They had literally pallets in the isles surrounding the sporting goods area. Back home in Moore you could find a couple of different bulk packs of 12ga bird and maybe a 20 ga bird load if they weren't out. If you wanted to stock up and buy 4 or 5 100rd bulk packs you might clean their shelf completely and it was likely you wouldn't be able to get that many. Sometimes there was none to be had at all. Even during August before dove season!I was told by a Walmart manager that the selection of ammo and sporting goods in general relies on the department manager in part.
I’ve been in Walmart’s that sell tons of shooting supplies including reloading components and presses.
Ours in Ponca City has one 20’ aisle in the superstore of mostly shotgun ammo and junk that nobody buys. Pretty sad.