Congratulations on a nice oryx.
Oryx have a strange skeletal structure in that the spine does not follow the top of the back as in a deer for instance, and the vital organs are lower. If one shoots what would be a high lung shot, or even a center lung shot on a deer, he will just hit meat. Some animals are lost as a result of this.
They are also difficult to kill for their weight. I remember also a book by Elmer Keith where he made a statement that they were as tough as old tires.
Jerry
