In terms of an all around African rifle, IMO, you simply can't go wrong with a well made .416 Rigby. It isn't perfect, but it comes close. I have found it to be too much gun for lion (at least with a Swift A-Frame), but that is a story for another time. Up close and when following up wounded DG, I prefer a double; not because it is a better stopper, but because it gives you access to an instant and assured second shot without having to manipulate a bolt. I am aware of an informal study that says that four shots out of a .416 magazine rifle is just as quick as four shots out of a double, but it's the second shot that gives a double the advantage in a tight spot.
I don't remember who said it first, but I agree with the dictum that "life begins at .40".
