I'm Tikka T3 (.300 WM and .30-06) and Sako A7 (.300 WM and .270 Win) owner / shooter. With properly torqued rings and quality scopes, I see all live up to the 3 and 5 shot MOA guarantees respectively.
The problem that one showed on a their rifle, though serious, was on a limited number of barrels Sako/Tikka found had problems they found cause, fixed and replaced. No such problems have happened since.