During the height of the great ammo shortage, every gun store I checked still had 7mm WSM ammo. Not sure why, but that was the one ammo I saw everywhere. Also saw a lot of 243 WSSM.
I noticed that too. Six months ago I could have bought all I wanted of 7mm WSM, 28 & 30 Nosler, 375 H&H, 7X57 and 8MM Mauser ammo, along with probably several others I'm not recalling off of the top of my head. I'm guessing warehouses got so low on inventory somebody came across a stack of boxes and said, "hey, I forgot we had these".