My stock of 'good' (read: expensive) ammo is fairly thin. I've got a couple of boxes of Cor-Bon DPX for my .45 in addition to my carry ammo. However, I buy practice/plinking ammo in bulk, so I've usually got quite a few rounds of FMJ .45 and .223. At the moment, actually, I've got over 1000 of .45 and 500+ .223 since I just stocked up, but as time goes by that'll dwindle to a few hundred of each before I feel the need to buy another case.

If the SHTF, I wouldn't feel undergunned shooting ball in either of these calibers. The 55 grain .223 FMJ fragments and does some serious damage and .45 ball is a reasonably good stopper. Pretty much any military rifle caliber is going to be effective, even shooting ball (since that's what they're designed for, after all). Pistol calibers are another matter. I wouldn't feel confident shooting ball ammo out of anything smaller than a .45. There are quite a few failure-to-stop stories with 9mm ball coming out Iraq and Afghanistan. These smaller calibers really need JHP to be effective.

A bigger stockpile of DPX for both guns is on my list, but it's pretty pricey.