True, and happy with powders which I like in the 222, 223 and 30/30 and in similar quantities.762x39 gives about 100 fps more than BO with 10 gr more powder. Does allow slower powder.
With all of that X39 potential fodder around, why don't you just get an upper? I really like mine. I neglected and dismissed AR's for years until forced to qualify with them. I erroneously blamed them for the missing 870 in my squad, when in fact it was a symptom of something else entirely.i didn't buy a BO until i found one with the faster 7 twist barrel.
i coulda bought 3 Rugers for the same price as that AAC, and did end up buying her one before the wife wore the barrel out on mine.
i really like the stock on the Ruger but i by far prefer the accuracy and throat design on the AAC.
i hemmed and hawed around on a Ruger american in X39 too long.
i don't know why i didn't immediately snap it up, i have a couple thousand NIB Winchester cases, die set, and a half dozen molds i could use in it, plus 2 plastic wrapped stacks of Hornady bullets for it.
everything but the bolt gun.