Just traveled across Iowa, Minnesota, Illinois and Wisconsin, stopping in at Scheels, Cabelas and WalMart whenever I found them.
Ammo is still in short supply, esp. the most popular handgun calibers and .22 rimfire. From bare shelves to occasional lots of foreign made handgun ammo, shelves for pistol ammo were remarkably bare. Common rifle calibers, except for .223, were more readily available.
Watch local stores for supplies. Some may keep a list of who wants what in the ammunition department.