It is, after all, how you get to Carnegie Hall. Joe Huffman has a picture in a post describing equipment use in WWII. Included is 41.5 Bn rounds of ammunition. Joe points out that we go through, collectively, 10-12 Bn rounds of ammo per year currently, just practicing.
Interesting to think that we are currently going through ammo at about the same rate we did fighting a two-front war. Probably a large percentage of what we currently shoot is .22 rimfire, but skills learned with a .22 are transferable to other calibers.
UPDATE: Fixed spelling error. A Wookie mistake I'm sure.