Let's see, the US civilian gun and ammo market doubled or more, in 2012/13. So, for arguments sake it went from 30,000,000 to 60,000,000 people buying new guns, ammo. That is a far larger market than the US military. And the ammo mfgrs went to 24/7 production, all of them, and a few new ones. The military/LEO, have multi year contracts, standard fare contracts, and the military are not deployed in any big numbers, anywhere. There is only one major component plant for powder in the US (it is not a powder plant), one in Europe, one in Australia, there were two in the US til 2008, the military have their own ammo plants, and ATK runs or owns a large interest in most of the plants in the US , Canada, Australia and Europe. The ammo plants have contracts that get filled, first.
One Euro plant had an accident, went down, another was going to be shut down, but, may have been sold, most of the commercial US powder is imported from Europe, Canada or Australia.
They are catching up, slowly, but the mfgrs were not prepared for what happened, and it takes time to ramp up production, and the sales have eased up a bit, it is recovering, but, it'll take til sometime next year, things will improve thru this year, barring something spiking it all, again.