BM
You're a bit harsher on 6.8 than I am. I think it has its place. Currently though, until it gains wider acceptance, that place is a hunting round. 6.8 is to .270 as .308 is to 30-06. A short cased version of a solid round, designed to work in semi-auto's. All things being equal, I would love to have my AR chambered in that rather than .556, and I'm sure most GI's would agree. Thing is, things ain't equal, and it's currently a boutique round with high dollar and hard to find ammo and mags. If I get the cash for a 6.8 upper, I will use it for hog hunting and will live with two five round mags. I wouldn't even think about it for an SHTF rifle. For that, I'll be using 5.56 and commonly available mags and ammo. As far as "saftey", evacuation isn't an option here. There is no reasonable way to get out without putting yourself in more danger. I have food, water, ammo, a generator, a grill and lots of lanterns and sundry supplies. It will be enough or it won't. Still, I do like the idea of parts and ammo being commonly available if days become weeks, and weeks become months as was the case in New Orleans.
FQ13