I just finished the 07 hunt with a new Tikka T3 300 WSM. I used 150 gr. ballistic silvertips. I have some info that is worth considering.
The first deer I shot was at 50 yards. He was roughly a 200 lb mature 5x5. I hit him right behind the heart with a double lung shot. Amazingly, he still walked 10 yards before just falling over. He acted like nothing hit him. Upon autopsy the entrance and especially the exit wounds were massive. Almost fist sized. There was blood everywhere. The lungs looked like red sponges that went throgh a blender. I learned two things with this shot. For a dead right there, stop in your tracks kill, better shot placement than a perfect double lung is necessary regardless of the caliber. Secondly, while shooting prone at a steep downward angle into a ravine, you need the best eye relief you can buy. Because this position required me to angle my forhead forward I now have a nice scar between my eyes from my scope.
The second deer shot was a mature doe at 75 yards. Double lung. The deer again walked about 10 yards before falling over. The autopsy looked the same as deer number one. Shot placement is everything for a dramatic kill.
The third deer shot was stalked for about 2 hours before I started to run out of daylight. There was no wind and the deer was standing broadside at 520 ranged yards. I held 12 inches high and the deer went down like it was hit with a lightning bolt. It was a perfect neck shot. Interestingly, there was no exit wound noted.
I feel I have no reason to not use ballistic silvertips. The flat got the job done, for me.