I'm not certain what the reasoning is for this or if this is that far out of the norm for what the usual purchase is. My instincts are that it could be that the administration, in their attempt to limit availability to people, are purchasing up all available ammo. It could also be that since there has been such a demand for ammo from citizens, they want to make certain that the government has all that is needed. Another scenario could be that being the spendaholics that they are, in order to use up the current budget allotments, they just want to buy up products that they will always need so they can get more money for more spending.