On my 2 trips for PG I took my 338win mag and shot everything from Eland/Kudu/Zebra to Springbuck and monkeys. I took a 30-06 but did not use it the 1st trip. I do not like the 270..........it is a personal thing about not wanting to chase wounded animals anymore. My 2nd trip I took my 257Weatherby and used it on the small ones like Diker/Steenbuck/Baboons/springbuck, even bushbuck and such. If you want to compare it to the 270 the 257w wins. It shoots flatter and has 1lb less recoil than the 270 if you want to talk recoil. It also kills very well using Swift A-Frames or Barnes TTSX bullets at ranges of 20 to 500 yards. The 1st trip my daughter took her 257R with my 120gr Swift A-Frames and took quite a number of animals from 135 to 410 yards. She took everything with one shot just as I have done. She took Red Hardebeest/Kudu/Zebra/Impalas/Warthogs. So The 338win mag is an excellent choice. Other cartridges will also work well given you are a good shot, pass bad shots and use good bullets. But "I PERSONALLY" would not hunt anywhere with a 270. Other can like and use it so long as I am not expected to spend all day chasing wounded animals. Also consider most PH's will get you close as you need to make a good shot from the right angle. Always aim to take out a shoulder and if there is any tracking it will be much easier. So take the rifles you shoot well just as long as they are bigger than a 223/243/6mm that you plan to use on larger PG. The 223/243/6mm is fine for the small stuff like Steenbuck/monkeys/baboons. I used the outfitters 22RF for shooting a bunch of monkeys for pest control and it worked but most ran off a ways before expiring.