AR folks? AR 10

Honestly I'd rather keep it simple. .308 is a versatile, proven round, and plentiful. If you look what happened after Sandy Hook you couldn't find any of the "designer" rounds, reloading supplies, whatever. Hell, half of the common rounds were MIA for basically years. If I need something bigger I'll whip out my .300 win/mag, anything else my AR15 will do. JMO.
actually, thats why I went 6.5.... I had just ordered my AR10 lower 2 hours before the shooting happened. ended up selling it because I couldnt get the parts I needed but I had spare parts for an AR15, so I ordered the barrel and bolt for the 6.5 during the height of the panic in early 2013 and was able to find 6.5 bullets easily.

what 300 win mag do you have?