Typically, the bigger the bore, the worse they shoot. Guys seem to have had the best luck with the 260s and 270s. I have a 260 that is a great shooter! Talked with a few other shooters that all rave about the 260 Titanium. I only know one shooter with a 270 and his seems to shoot 2MOA. My experience is that the 30s were a wild, 8 to 10 MOA. My first Titanium was a 30-06 that fell into the 8 to 10 MOA category, no matter have much I played with loads, free floating, tip pressure, and stock design. Another buddy of mine had a 308 that turned out 3 MOA with a light load.
[QUOTE}
This has not been my experience at all. My .300WSM is a sub-moa shooter and I've got a buddy with one in .300WM that is also a great shooter! And that is both rifles sitting in factory stocks without any bedding or mods.