@IPSICK, sorry, didn't see your message
By shells I meant shotgun ammo and not particularly 12 gauge. I send replies on my phone so I end up using slang for brevity sake. I'm also not looking for shotgun ammo in particular, although maybe I should since it appears to be in stock.
@Valegian, thanks for the explanation. I seriously thought that WM-Milpitas was halting ammo sales when the sales clerk (whom I shall dub "Useless") was emptying the cage.