Those components are also going up in price and scarcity. (there are lots of reloaders out there already)

How much ammo should you have?

Enough to last the rest of your life because you can't be sure ammo sales to non-military won't be banned. Like not waiting until your gas gage reads Empty before refueling, don't shoot up all your ammo. Keep a reserve.

Please do plan to practice once in awhile.