There was a guy at the Magnolia range 2 years ago I think...who works at Bass Pro. He had a reloading survey he was asking people to fill out that he was going to turn in to corporate in attempt to show them the interest our locals had in reloading supplies. After that, Bass Pro in Pearl did begin carrying powder and primers. (availability another story on primers of course, but they have had some here and there).
Bass Pro has pretty decent prices on reloading stuff online such as dies, bullets, etc.
I'm very fond of the reloading section at the Cabelas in Baton Rouge. They have a wide selection of bullets at good prices. If Bass Pro takes some reloading section tips from Cabelas they will be doing good.