Can't really say as I haven't shot the rifle in about a year and I don't keep good records. I will say it will routinely group under an inch with 130 gr. Fusion or Winchester Ballistic Silver Tips. If memory serves, I believe I have shot a .5 ish 3 shot group with handloaded Sierra 130 gr. GKs.
I was pretty surprised with this group to say the least and don't know if I could do it again on demand. Generally, if I have a load (factory or handload) that groups under an inch, I am satisfied.