Lemme see. My wife and I have used the .270 on pronghorns, whitetails, mule deer, caribou, elk, moose and bison, with no problems. Didn't use it on the two bighorn ewes we've taken, or any black bears, but did use "faux .270's," including the 7x57, .280 and .30-06. Maybe .270 bullets would have bounced off the sheep and bears, but I doubt it.
Have seen it work in Africa too, even on some supposedly super-tough plains game animals.
On Bison?
