The National Shooting Sports Foundation estimates that 10-12 billion rounds of ammunition are produced domestically each year, while billions more are imported.
Previously I had been inferring the total sales were in the 10-12 billion range.
Regardless, if, as many anti-gun people claim, guns are only good for killing there sure are a lot of defective guns and/or ammunition out there.
On top of that, add the thousands of reloads that many thousands of the more serious shooters make each year, and you are talking some serious numbers 🙂