I have used the 200 Partition a lot in "big" 30's [300 H&H, 308 Norma, 300 Win, 30-338] I believe the 200 is the best weight in the bigger cases. The above named chamberings will get from 2850-3000 with the 200, and that is a pretty effective load on about anything you would choose to shoot in North America. It gives up next to nothing in trajectory to the 180, and hits a bit harder out there. What more could you want? Eagleye.