I have used the 200 Speer In my 30-06. Good results in big Kansas whitetail bucks. I like two holes and the cardiovascular system shut down in between. They did that well.
The 200 Speer in the 8x57 is also a dandy. I would pull the 198 grain fmj from Portuguese machine gun ammo and stuff a 200 Speer in its place. Full pressure loads those. Killed big NY bucks well.