A Frames
I've taken elk with 250gn Swift A frames in a .338 ultra mag, they worked. Although I made a 3" three shot group in the lungs at 160yds none of them exited which kind of suprised me. They must expand pretty fast not to exit at that velocity.
I took 11 plains game animals in Africa last spring, from Duiker size to Kudu and Gemsbok with 180 gn Trophy Bonded Bear Claws in a .300WSM and was very impressed, some of the bullets were recovered and were perfect mushrooms. The shots ranged from 50 to 350 yds and 9 of the 11 animals were one shot kills and the others were operator error not the fault of the bullets. So I am definetly impressed with the bullets, altough I'v heard that the 300 gn for .375 H&H and bigger ones some people thought they were to soft for buffalo but I have no personal experience with them.