“Each year U.S. ammo manufacturers make about 8 billion rounds, according to the National Shooting Sports Foundation, the trade association for the firearms and ammunition industry. Current production data won’t be in until late May, but the foundation expects the numbers to be way up.
“In order to keep up with demand for ammunition, manufacturers are working at full capacity, 24-7,” says Ted Novin, an NSSF spokesman. “Currently demand for ammunition is outpacing supply.””
http://www.cnn.com/2009/US/05/04/ammo.shortage/index.html
I have a friend who has a friend that works at the local Remington Ammunition factory and he said the same exact thing. Said a new pallet of ammo never goes into their warehouse. It's loaded straight onto a truck and shipped out.