By all means - sort of a bugger with a bolt actioned rifle in calibers doing 2300-2500fps as you are stucked with the one that is in the barrel atm I'd give a DGX a sincere second though and an expanding X-type monomentals might just be the ticket.

With a double there is always the best one at hand - soft in the right and solid in the left barrel - taking in account the usual velocity frame of 2100 - 2200 a "true" well expanding soft Woodleigh type is hard to beat on a perfect side on shots. Still with constantly changing situations in the bush and possible misjudged angles I think it is fundemental for a soft to be at least a bonded one. Bullet that might shed the jacket by doing mere 2100 is rather frightening when hunting DG such as Cape Buffalo - something that doesn't have a place there. With all the worries you have on a final stalk - tiredness, heat, thirst, fatigue, tse-tse's, mopane beas...the last thing one should worry is a damn bullet - not to mention a charge situation...