Opinions requested on scope/rifle set up.

[Great-Kazoo]

Right now I have only been shooting iron sights on both, 100 yard max due to Old Fart eyes.
By too much scope for the AR 10, I mean is the 16" factory stock Armalite carbine barrel capable
of shooting say a 3" group at 400 - 500 yards ?

I am planning on picking up a NM 20" upper for the AR10 when I have enough funds and if they become availible from Armalite again.

Drop it on the 16" .308 . My 16" FN was capable of 400 yd steel shots with iron's, when i could see 20 yrs ago. You should be able to do 400 yds easy if not 5, being able to see that far makes it more enjoyable.

[Tim K]

Put it in a Bobro QD mount, write down the change in zero going from one rifle to the other, and use it on both. You'll figure out which one you like soon enough. My Bobros return to zero within about 1/4 MOA.

[SideShow Bob]

Sounds like you need a new rifle for the scope because your current ones aren't suitable for the scope. Thats how I would sell it to my wife and then mount it on the 20".

I'm all for this.....I'll have to start working on the wife little by little, or let her go to BlackHawk. For any amount she wastes at BlackHawk, I get to spend an equal amount on frivolous gun stuff..........