I would think the Double is best employed shooting solids when hunting Ele at close range. The bigger hole the better.

That said I enjoy handling my present 500 Double so much I would love to hunt other game and Buff(with no possibility of Ele)with a QD scoped 450/400.A soft backed up by a solid should be great.400 grains at 2150 fps should be lethal enough for any animal considered housed in a lighter Double than the Ele gun.Following this line of thought a QD scoped 9.3x74 shooting just solids should be a dandy as well, although not having the "stopping" ability of the 450/400.Methinks I would go for the 450/400 for Africa though.

All this heavy thinking from someone who has never been to Africa. I hope to correct that this spring though.