I have always found them to be very accurate in .308.
The one thing you should be aware of is that they are designed to fragment on impact. The petals will shear off. So weight retention is limited to the soild rear part of the bullet.
Fox are great bullets. The best I tried so far. Used them mostly on roe deer and one red deer doe. They open up and kill fast, leave no lead in the venison and leave a clearly visible blood trail. The only reason for trying Jaguar is cos they are almost 1 g lighter than 100 gr Fox. Trying to minimise recoil.