If you want standard length cartridges/standard length actions then forum member Ripp's desire for a 416 Ruger wildcat would be perfect and give plenty of velocity at lower pressures than other standard length wilcats.

For the 110-120 degree African heat I would prefer the 416 Rigby with lower pressures, otherwise the 416 remington or a 375 Ruger wildcated to 416 should do just fine.Just my personal approach from havingsome overly hot handloads lock up some of my bolts(from my previous max velocity days)--not good!!!