I think 2000 - 3000 per gun is a good start
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Actually ammo has been debated as a barter currency. A lot of people see it as a dangerous barter tool, but some don't think people will revert to uncivilized behavior even in a long term survival scenario and think it is a valuable trading essential.
Trade Bob some ammo for his seeds and he shoots you and still has his seeds plus he now has more ammo.
Not everyone is going to be honorable in a survival situation, in fact most probably will not. I would rather keep my ammo secret from strangers and trade other goods if I needed something from someone else. I would rather stockpile personal care items for barter. In a real long term situation, toilet paper, tooth paste, Tylenol, Aspirin, antibiotics and cheap whiskey or Listerine for antiseptic would be worth more than gold or silver for barter , paper money is worthless. Precious metals only have an intrinsic value if people still see them as valuable(serve some useful purpose). Ancient peoples did not "value" gold or silver, they saw it as a decoration or something that was easily formed into something artistic or a religious idol. If we are thrown back into the ancient way of survival, only useful things have value. The biggest advantage we have is modern firearms over our ancestors. I am not trading anything to someone to "even" the field against myself. Let someone know that you have enough ammo to trade, they will hunt you down and take all of your ammo.....and guns....and probably everything else you have. They won't have a gun fight, they will just kill you any way they can without putting themselves in too much danger like shooting you in the back with the ammo you just traded them.
Or if it put your family into financial trouble, or if you want to be mobile.I'm quoting someone on the site, wish I could remember who
"The only times you can have too much ammo are if you're on fire or trying to swim."
Realistically, I probably have more than I would even need and feel like I'm under stocked. Too many Postman, zombie, Mad Max movies out there, I tend to think I need enough to last me the rest of my life.
Realistically I think you're right, 100 should be plenty for a LA riot or a Hurricane Katrina type situation. Personally I try and keep about 300 .40 S&W (have a Beretta 96 for the wife and a XDM for me with about 6 mags each.) and 500-1000 for the AR's. Plus 500-1000 .22. The rest of the guns I could care less, because those are our SHTF calibers.
I'm as guilty as anyone. My UPS man has certainly filed workers comp claims because of my orders from AIM surplus.