Shot AR15's and AR180's for 30+ years. Always wanted to upgrade to 7.62 platform. Got down to either M1a, RRA LAR08, or AR10. Ended up with the AR10 and like it a lot and very impressed by its accuracy.
The problem is not the scope it is the mount. What mount are you using? And what make AR 308? The problem with clearing sights is that it is sometimes impossible to crank the scope down that far. Might consider some other iron sight options unless yours is a fixed handle AR.
I ordered an LAR-08 A4 on July 9, 2012. Got tired of waiting and bought an off the rack AR10 A4 in November. My LGS kept the order open and still has received nothing. Only option was free float handguard. Would have been a great rifle but I am happy with what I got.
200 meters, 19 degrees 30 mph quartering wind. Adjusting sight for distance. First shot 3 inches high. 8 clicks down on scope. Next four shot. Too cold to shoot anymore.
Always wanted one,and since I read about the original AR10's back in '61 was fascinated by that rifle. Messed around with AR15's and finally got mine right before the recent craziness. Shoots 1 MOA at 200 meters. Haven't tried further out yet.