Mine shoots between ~.5" to .6" with Federal Match 168's. The rifle is a Winchester M70 short action with a pre-64 type bolt(positive feed type) with a 4 shot magazine. The trigger needs some work...but it adjusts the same way a regular ol' M70 does.
I haven't tried any other ammo yet but I expect it to shoot better with handloads. I think the barrel is a 1:12 .
Apparently the only FN made item is the barrel which are made from the same stock as the M240/MAG machine gun barrels. I hear FN is coming out with other versions(300 WSM & 338 Lapua).
For the price (~$750-$800) I think its a great "out of the box" rifle(IMHO)