My experience with the WM website/app stock status has been great for scoring 9mm and a complete failure for .22.
My local WM has been showing various .22 ammo as in stock. Even when I show up early in the morning they insist they have none nor have they had any in months. They also insist that they have no ammo squirreled away "in the back".

My trips haven't been completely fruitless. Sunday they had Winchester 100 rd. 9mm packs and they even had 10/22's @ pre-craze prices.