sourdough,
my guess would be about what the 308 did. Maybe the 35 and 338 would do slightly better, depending on the weight of the bullet.
I read a curious post some time back where the mighty 45-70 was compared to the 458 Win and some more powerful. The 45-70 loads were Garrett loads and he has a theory about too much velocity, causing a tremendous release of energy upon impact but with the resulting loss of penetration.
It was a good read. Something about that big slow bullet defies everything the ballistics charts say. I think that is why I am leaning towards heavy for caliber bullets, instead of light bullet, laser beam trajectory.