First trip RSA June 2013 used Win. 70 in .300 WBY,220 gr. Partition at 2870fps.Kudu very dead from 240 yd.,impala.warthog,no problem.Tough going away shot on zebra from 150 yd. glad I had the horsepower,penetrated 3-4 ft. of high rib cage and animal still went 120 yd.Also took a very nice cape buffalo bull.
Second trip RSA July 2016,decided to go the classic route.Custom stocked P64 Win. 70 in .270,handloaded with 140 gr. Barnes TSX at 3000 fps.One shot kill on zebra from 60 yd.Shooting through the edge of light brush on waterbuck,dead after 40 yd. dash.Wildebeest at 100 yd. down but required a finisher after it regained it's feet(somehow).Gemsbok shot too high and too far back had to be tracked 200 yd. for the finisher. Yes, the P64's are better!
Satisfactory performance from both rounds but do like the extra wallop of the bigger cartridge.Can't stress enough that shot placement is the most important factor!
Would like to return again for sable and croc and maybe another buff.Planning to take a .35 Brown-Whelan with 250 gr. Partitions for the smaller ones.
Best of Luck on your trip!