I have a friend headed to Africa for the first time. He has time to purchase a rifle and get comfortable if necessary. He has a .270 that shoots well (Tikka). He is not a handloader. Game would be typical plains game including Kudu, Waterbuck, Zebra, Gemsbok, and down to Impala. No Eland or larger. I've been once, used a 338 Federal shooting TTSXs and it worked fabulously. What cartridge would those of you with significant experience recommend? He will stick to a premium bullets per the PH's guidance. (Bonded, A-Frame, Mono, etc.). I believe all of these cartridges listed below would work, but I'm tossing this out there to gain any unique insights I haven't thought of.
Stay with his .270 using a heavy, premium bullet? or...
308 Win
7RM
280
30-06
300WM
