I have one in 30-06 and i take it to 1000 yards regularly. 5R rifling is a just a different type of rifling design that has angled lands instead of the typical lands that are right angles, plus the land are not directly across from each other, so less bullet deformity. I have several factory rifles and i have not felt a nicer factory trigger. I can get half inch groups at 250 yards with handloads.
I have one in 30/06 also. With handloads (55.0 IMR-4350 and Barnes 168 TTSX), it shoots a half in group at 100 and an inch group at 200. It is my deer rifle, and my Elk back-up if my Weatherby .340 ever fails.