I have hunted a lot of places besides Africa where a plane ride was involved. Like me, the vast majority who also do that don't drag multiple rifles to North American locations, Europe, South America or Central Asia. If an elephant isn't on the menu where you want to use that special double rifle, there is no need to do it on a modern short excursion to Africa either (actually isn't necessary for the elephant either.) Back between the wars and shortly thereafter when a full bag and a month in the bush was normal, then an African battery made sense. But today? It is just extra unnecessary weight. More than anything involving travel, I hate schlepping a single unnecessary pound.
If hunting buffalo and plains game I bring a .375 with 300 gr A Frames and a few 300 gr solids (Hydros shoot to the same POI in my current favorite .375). The A Frames are for everything except the tiny ten which is the purpose of the solids.
If hunting just PG then I have used a .338, 300 WM, and .275 - one at a time.
If hunting buffalo and plains game I bring a .375 with 300 gr A Frames and a few 300 gr solids (Hydros shoot to the same POI in my current favorite .375). The A Frames are for everything except the tiny ten which is the purpose of the solids.
If hunting just PG then I have used a .338, 300 WM, and .275 - one at a time.