For any of the readers that are interested, many of the constructive comments in this thread come from a body of assumptions that have been confirmed by experiences and then later by scientific research.
If you‘d like a great primer on “what works”, the vintage book ”African Rifles & Cartridges” by John “Pondoro” Taylor is a classic. Leatherbound editions were made several times over the past hundred years that are really, really nice. You can pick one up second hand on
www.Abebooks.com for around $25-$40 in a fancy binding if you do a search.
Pondoro explained from a vast trove of experiences observed and collected, what works and what does not work for African safaris. He doesn’t get enough credit where credit was due. His basic gist was anything over 40 cal that leaves a muzzle at 2100fps and hits an animal at 1900fps is going to work fabulously.
Where Taylor went wrong was he was relying on experience (correlation) rather than science (causation). His TKE formula is not perfect science. His understanding of penetration was excellent but his understanding of hydrostatic shock was not a known science back then.
It’s a great read every gentleman should have in his library and it would shed understanding on many of the 100-year plus proven cartridges that work so well on Safari.