The price of his store's ammunition has more than doubled since mid-December, says Larry Hyatt, owner of Hyatt Gun Shop in Charlotte, N.C., which bills itself "America's Largest Gun Shop."

I spoke to Mr. Hyatt today about the increase in the price of ammunition since mid-December (when the gun control debate began to heat up). Hyatt said that the ammo market is "very volatile" and that he "doesn't know when the next shipment will be."