If there is /are threads on this already, link me to them, but I didnt' see one. The next caliber for my stash is the most common on the planet - 7.62 x 39. It adds to what I have. Yep that caliber only, I have the others I am interested in at this time. Best of course is subjective - reliable is the most important part of this as far as I am concerned - Costs - a $10k rifle may be the best, but it would not be obtainable - same for super custom - available - I am looking for semi-auto (not full auto, nor bolt) - kind of rifle that you have in the safe just 'cause and one you can share as needed in SHTF Some info I have stumbled over - (not sure how definitive this is) 1 - Ruger Mini-30. Older versions didn't do well with hard primers. A bit of fiddling / spring replacement seems to fix this. Current ones? 2 - 7.62x39 AR uppers, haven't had a glowing following. Not clear to me why that is 3 - AK's - I am not going to get an machine gun license - are there semi-auto AK Clones? 4 - SKS others? Thoughts / suggestions?