My first, and only Antelope hunt was a terrible learning lesson for me. The 270 Weatherby Mag was loaded with Mule deer bullets when we came upon the antelope. Pre range finder days of 1980., about 150 yards. I hit the poor creature 4 times with the 150 grain bullets as he ran. When he turned, I saw the 4 blood trails through the scope, running down his side. I was making holes, with little to no bullet expansion. I learned right then, that small soft skinned animals should not be shot with tough bullets meant for bigger animals . I have never forgotten that experience of my first Wyo. Mule Deer and Antelope hunt. Nice antelope, but an important Hunting lesson.