A buddy of mine surprised me with an AR the other day, I have been wanting one for years.. The upper is a Stag 2H.. As soon as I wait my 10 days to get the lower I plan on putting it together and working on some loads... My question is what kind of accuracy should I expect?.. In all of my bolt rifles I have no problems working loads that produce sub MOA groups.. I have a Rem Model 7 in 223 that I have loaded 500 rounds for ( 55gr. V-max in front of 25 gr. Benchmark) The brass is all full length sized, can I shoot this ammo safely as long as it is good for OAL ? Would the 1:9 twist stabilize a Hornady 68gr BTHP?