In a typical year Americans buy between 7 and 10 billion rounds of ammunition. In the past year they have bought 12 billion rounds. It’s no secret that ammo is flying off store shelves faster than factories can produce it but it’s nice to see a number put on the hoarding. That equals about 150 rounds of ammunition bought by every gun owner in the United States or about 47 rounds of ammunition for every privately owned firearm in the United States. Not very much when you put it into that perspective.