I have never been to their websight but I have seen the buffalo you are talking about in their add they run in primitive archery. I have it in my hands now. it was done by the president of the company Lynn C Thompson of ventura Ca and he has done it more than once.Says he used the samburu spear If I can get a scanner to work ill scan it.(my boys were doing "bio research and messed my CPU up

). Email the web sight they must be able to give more info.
Dean