If a .458 Lott is initially too nasty to shoot you can always load it down and slowly work your way up, stopping at whatever level you find comfortable or tolerable.

Several zoos, parks, and wildlife agencies issue .458's to their employees and for some of those employees it may be the first rifle they have ever used...and when the nature boys are filming the highly deceptive programs for television to show how harmless wild animals are, there is usually someone with a loaded .458 on the set out of the field of view of the cameras.

The .458 Lott is probably the practical choice but I'd go for the .416 myself, merely because I've never had a .416.

Richard.