I definitely agree that ammo and guns are great currency in a SHTF scenario. Even if S-Doesn't HTF, ammo and guns definitely appreciate. I NEVER have less than 1000 rounds per caliber. If a SHTF scenario ever happed, or I simply got too old to WANT to do any more shooting, I wouldn't need more than 1000 rounds. In a SHTF scenario, we wouldn't be "Plinking" for fun any longer. I'd narrow my "collection" down to about 4-5 guns. These would be guns that are easily carried and/or transported. I'd sell or trade the rest, and the ammo, for the things I might need. My #1 caliber in a SHTF survival scenario is 22LR. 1 rifle and 1 pistol in 22LR will satisfy 90%+ of my survival needs.
But for my 9mm, it's pretty simple. A couple of boxes of 147 grain golden sabers for one 9mm pistol, and a couple boxes of Hornady Critical Defense for the other 9mm pistol. I've tested them to know they shoot well, and I NEVER shoot them again. Just a waste of money to do that. I plink with $9.47 a box Federal 115 grain that i get at Wal-Mart. Just bought 4 more boxes today. One of the few calibers that it's actually cheaper to buy locally than on the internet. But in all honesty, my 9mm pistols will probably be the first handgun I trade/sell in a SHTF or old age scenario. I'd also sell my 380's. I'd keep my 9mm makarov and 32acp pistols ahead of them. I'd also sell my 357/38 pistols. (Except for 1, my S&W Model 13-1). When all is said and done, I'll have my Sig P220, S&W model 13-1, Walther PPK 32acp, CZ-82, and Dan Wesson 22LR. For rifles, I'd have my .223, 22LR, 12 guage, and M1 Garand. (The garand probably isn't the smartest choice, but 30-06 ammo can be found almost any place, and an 8 round clip is good for some defensive purposes). Other than the 22LR rifle/pistol, these will take care of all my self defense needs for me, my wife, and my daughter.