Welcome to TFL, levi431!
We've had dozens of these ammo shortage threads, and it just appears to be simply a matter of demand outstripping supply.
However, given that we have had dozens of these threads, I'm going to close this thread. If you have more questions about the Great Ammo Shortage of 2013, you're certainly free to ask it in one of the currently-open threads on the matter.
I'm a lawyer, but I'm not your lawyer. If you need some honest-to-goodness legal advice, go buy some.