Tried that a few years back and got 1.25"-1.5" or so @100yds after much loading, shooting, and tweaking. That's about all that particular rifle would ever do with anything, though. Velocity never got where I wanted it from a 24" barrel.
I have found it to have excellent terminal performance on deer from my 308 semi-auto. I keep shots under 300 with it due to low velocity (16" barrel). Don't know that you could keep one inside a southern whitetail regardless of angle.
