[Contenderizer]

I agree with the Rockmeister; all bullets will deflect, though it seems logical that a heaver bullet will deflect less then a lighter bullet when striking a given object. For your shot on that doe to have deflected as much as you indicate, you may have hit more than just a twig; or perhaps the doe stepped forward just as you let loose. But, you were there, I wasn't.

I stick with round nose, shorter bullets. I find them more accurate overall. Besides, my shooting isn't that good so I try to keep my shots under 150 yards. At that range little is gained using a bullet with a better BC.