I had over 300,000 rounds in the basement of my gunshop when the shortage hit.
I made out like a masked bandit.
People were buying 45ACP $500/1000 (and it's STILL pretty goddamn expensive). I won't tell you what I was paying for it (2004-6 era pricing).
I sold 50,000 rounds of 7.62x39 for $300 a case (5x what I paid for it).
I managed to get ahold of 500,000 primers during the height of the shortage (was first in line on a backorder). I went around and restocked all the local gun shops, kept 50k of each size for own greedy self.
Of course once it was gone, it was gone.
If I were you guys, I'd be more worried about FOOD than ammo being short.
If there were a major crisis that disrupted the food supply, game animals would be near-extinct in fairly short order.
I spent a big chunk of the money I made during the shortage almost exclusively on freeze dried food and MRE's. Got enough to feed my family of 8, for 6 months comfortably.
My friends always say "I'm coming to your house if anything ever happens."
I say, better bring a truckload of food, because you aren't getting any of mine!