You might want to rethink this... Lets say something bad happens, and there are food riots, ramped crime in the streets, gangs looting, and home invasions so common, no one even responds to 911 calls... All the ammo you have at this very second is all your going to get for a long time. The 2012 shortage of 22 LR ammo should serve as a good example, its going on 3 years of it never being on the shelf. And the shit has not hit the fan yet... That should tell you something.
I have plenty on hand, but if the situation was as you described it, I'd no longer be in Atlanta and I wouldn't be able to physically haul all of my ammo with me. I have humans, dogs, food, water, etc etc etc. There's only so much ammo I'd be able to take and only so much I'd need. I'm just wondering what that number is likely to be. There is an amount of ammo over which won't prove useful.
How much ammo would be used in a firefight?
How often would you plan on being in a firefight?
If that number is high..what is the likelihood that you'd survive for an extended period of time?
Everyone believes that they have what it takes to be the last house standing, but that's fanciful.
If you're burning through cases of ammo in a post apocalyptic hell hole, you aren't going to be around long...at least the odds say that you won't.
Honestly I think people way over estimate the amount of ammo that is necessary and practical in all but teotwawki. That's not what I'm preparing for. I'm preparing for high prices and limited availability due to political reasons, perhaps the outside chance that some economic downturn could cause some short term unrest.
So far, the amount I have on hand has easily gotten me through two of the worst ammo shortages in my lifetime.
No .22, no problem..I buy it cheap when it's readily available.
Right now you'd have to be out of your mind to not be buying centerfire ammo. It's very cheap and it's plentiful. Don't wait.