i've used a 338WM, 416RM and even my partners FAL with 147gr. ball for quite a few head. why shoot baits with a 416!
these days, if there were no buff or ele. in the area and eland was not on the menu, i'd just take my 270 with 150 GS or 160gr. partition bullets.
if eland were included, 9.3X64.