Hi Daryl
yes, you are correct! They have a Youtube channel called Oxwagon Diaries. See link. It is not quite the same area, but is close enough.
https://www.youtube.com/results?search_query=oxwagon+diaries+28
They use air rifles and I think a .260 remington for long range shots...

The Eastern Cape in SA is really a underrated hunting destination, and one of my personal favourite areas! The variety of game, landscape and terrain is unique and one can hunt anything from steenbuck to eland in one day! All while walk and stalk in some of the most beautiful terrain anywhere in the world!

Niel