I have used the 165 .277 Matrix on 1 Oryx in New Mexico, Oryx, Wildebeest, Kudu, , Blesbok, Impala, Springbuck, and Steenbuck in Africa. All 1 shot kills except the Africa Oryx, and he was at 605 yards. It took two for him. He was dead on his feet, the second shot was insurance. My rifle is a Win. M70 Extreme Weather in 270 WSM w/ a Huskemaw
5X20. My load is 68 gr. Retumbo w/Fed. 215 M primer seated .015 off the lands. I get 3000 fps w/ this load. Same gun, same bullet, will be going back to Africa with me in May 2014 for more Plains Game. I am also going to be taking a SAKO in 300WSM w/ 194 Matrix Bullets.
I live in New Mexico where it is almost impossible to draw a tag, so in 2012 I threw in the towel and went to Africa. I only wish that I had started doing this 20 years ago. I can go to Africa and hunt plains game a hell of a lot cheaper than I go drive 100 miles to Chama New Mexico and hunt Elk!