My buddy who is NO slouch, bought a Rock River National Match rifle in the early Summer.
When I say "no slouch" I mean he used to go to Camp Perry every year, and one year made The President's 100.
Last week, he showed me some groups from his experimental loads.
With 52 grain bullets and Accurate powder he was getting 1/2 inch groups at 100 yards.
This was with a scope, and he claims he's just not used to the rifle yet, nor are his loads "there" yet.
He's working up 80 grain loads for 600 yards, and the rifle is shooting some astounding groups for a couple of guys who were used to the M1 and M1A NM rifles.
He's having the detachable handle's sights reworked to 1/4" MOA clicks, and having the sight pinned.
The trigger is astounding.
As far as I know, Rock Rive is the only maker who guarantees a specific accuracy.
After taking a good look at the rifle and how it's shooting, I'd very much recommend the RRA.