Hi Allen,
Good luck on your safari. Its sure fun to pick the guns.
A while back I remember someone who took I think a 458 and a 300 WM and the 458 rifle broke for some reason. Next up was a lion and the hunter used his 300 WM on the lion with good results.
Is a 270 enough gun for a back up?
I know one could borrow a gun there of course but........