Yup, a good portion of Wal-Marts in this area have reloading sections. Funny enough, I've never found them in the more rural Wal-Marts where you would think there were few to other alternatives in the area. I guess the market was just too small in the smaller towns to make it worth their while.
And like John said, sometimes farm/ranch stores have them as well. C-A-L Ranch is chain in that's been spreading through-out the mountain west that often carries reloading supplies, even when other stores are out. Their prices are a bit higher than elsewhere for reloading supplies, but if you need something in a pinch...
