Peter_I:
Jokes aside. Modern gunnery training takes an awful lot of ammo. As far as I remember, I've heard something like 8,000 rounds per soldier mentioned if you want to have CB proficiency.
That is true, and the 8K rounds to become a good shooter is still a very conservative and optimistic estimate.
Remember that automatic guns go through a full 30-round magazine in a matter of seconds.
When I was an active IPSC shooter (IPSC is a shooting sport), on the 2 weeks before any major championship, I'd shoot 2K rounds per weekend, and that's just for practice. In the 2004 Brazilian National IPSC Championship, I finished in 3rd place in my class, and practice + competition consumed about 5,000 rounds. A master IPSC shooter can go through 10K~12K rounds a month EASILY.
10K rounds for one that practices shooting as a sport is not really that much. For taking one man without any shooting experience and make that man combat-ready and a "good enough" shooter, I'd say 10K rnds is not that much.