I had something to say on the original post that
@MT_Fin put up, then I saw how old it was. Anyway, it is a relevant post still today so I will resurrect the post in it's original vain if you will indulge me. I often see folks here discussing a rifle option for PG, but with an African flavour to it. But then someone says "but you might just want to do DG too", and then the whole thing inevitably devolves to the 375 in some form and the plot is lost.
For me, let your PG be PG and DG be DG.
Then in true African flavour you can choose something like a Ruger No1 in 300 H&H; light , highly dependable and accurate and able to take any eland clicking. Perhaps
@Doug3006 would be kind enough to show us his beautiful example which I had the privilege to carry in Limpopo.
On the DG side you are then free to embrace Africa with the very correct and appropriate double, up to 450/400 if you are mainly after buffalo, and maybe a 470 of 500 if elephant are on the ticket.
And, of course, wear a pith helmet!