I could have said .375 H&H or .416 Rigby instead of 30-06...but then the answers would be obvious. The 30-06 and the 45-70 both share the same Ft/Ibs, and both can be loaded in a leveracion with scope. In reading Boddington book, there is a place where he states that he wouldn`t mind shooting buffs with 30-06. I think the 30-06 has a slight edge in the versatility dept, other then that they are both good/bad cartridges for africas biggest, but where most people has agreed for many years that the 30-06 is too small for africas biggest, now suddenly the 45-70 is having following controvertial or not