[Cold Heart]

CCI has been reliable, other brands not so much. Not just my experience but many others. A lot depends on storage conditions. I have had match grade 7.62 go bad but that was 30 year old stuff. All had excess fouling and two misfire. out of twenty.

[grobdriver]

A lot depends on storage conditions

I was concerned about that myself - but we're talking decades in ammo boxes in a Central Texas garage.
Same for good quantities of .223 and .45 stuff put up at the same time

I don't worry about storage conditions so much any more. I've made room inside for my ammo, but it'll probably be good long past when I'm gone - if I don't shoot it up.