Guns R us, They are not b/sing you, The US military has the longest logistics tail in the world, some thing like 10:1, it not only includes the supply people packing the gear that gets shipped over, but the clerk who handles the paperwork, even the PAO, and the unit Family liaison and recruiters are included in the estimate.
Billt, I would bet that they paid less than Cabela's (Cheaper by the dozen million
) and agreed to spread the order out over a period of time, also, while no one may have actually needed to fire a shot in anger there ARE training requirements to be met that require a certain number of rounds.
I know when I was in the Marines carter kept the military on such a short budget that if you did not pass your annual rifle qual. there was not enough ammo in the budget for a requal. you had to wait till the following year. Part of that 200 million rounds could be
planning hoarding for a rainy day.