I think Dodd's predictions above are pretty accurate, except war with China and Russia. Think of it from the point of the ruling class in those countries. What possible reason is there for the Chinese ruling class to invade the US? To grab our factories? They already have them! To grab our farmland to feed their people? No, it's much less expensive to let Americans farm their own farms and just buy the food, paying with goods they produce in their factories.
It's not to say wars won't happen, because war is often in the interests of the ruling classes. But I expect them to be more localized, except special cases like where there is oil (yeah we and Europeans will continue to occupy the Middle East). Maybe America will invade Mexico. But Chinese are not coming here, other than to
purchase an occasional property here and there, which is not a problem. Our problem will never be invasion. Our problem is and always will be the occupation of America by the lizard people running Washington D.C.
As to ammo, what is "enough"? For example with .308, I think you need enough .308 for 100 to 200 rounds per bolt gun (2 or 3 times that much for a semi-auto) for actual fighting. Why? If you are fighting, by the time you have used up 200 rounds and killed 50 people, you will be dead. Maybe a lot sooner! At any rate, your chances of going beyond 200 rounds fired in anger from a bolt gun seem slim indeed (we will not be following "get a lot of lead in the air" doctrine). For practice, you need some more, but I don't think rifle skills are
that perishable (pistol skills are probably more so). You may be able to reload and use cast bullets for this small amount of practice, so a couple hundred rounds total with reloading supplies should be plenty.
Why 200 rounds per rifle? Because you will be loaning out your guns to people who didn't think ahead, to help provide security needs. Any gun you have without ammo is just a club, so you have to think about it on a per-rifle basis.
Finally you need ammo for trade, however much you are comfortable getting. I think ammo is an excellent trade good.
The above may well be total BS, so don't take it too seriously.
