This pair would do to hunt the world. My pair of Ruger M77 Hawkeye Africans, one .275 Rigby and a 9,3x62mm. Putting tradition aside, honestly, I would swap out the .275 for the .30-06 I completed recently built on a Interarms Mark 10 Mauser.
And a side note. The 9,3x62mm might be my favorite rifle. Every time I take it and shoot it I get a big silly grin. It is just plain fun.