Apparently they still teach the 25-yard (or actually, meters) sight-in at the South Africa professional hunter school. Or at least I have hunted with at least 2 PH's in RSA that insisted on the 25-yard/meter sight-in and that's what they told me they were taught.
One of them was quite arrogaant about it too, especially when I insisted that I shot my rifle at 100 yards too. Turned out it was 7" high. He was astonished, because he had never checked it before....
