On my first Safari, which took place in Namibia, a German hunter in camp was using a 7 X 57 with 175 grain Barnses X bullets. He hit a huge Eland Bull too far back with his first shot. His 2nd shot was a Texas Heart Shot, and the bullet traveled the full length of the bull, and was recovered in the brisket. I'd have no hesitation using the 7 X 57 on any Plains Game as long as I was using a premium, heavy for caliber bullet. In the 7 X 57, the 175 grain bullets are just like the "Energizer Bunny"...they just keep going, and going, and going.