RWS seem to be an interesting company when it comes to hunting ammo. They, along with Norma, seem to have a very strong emphasis on quality, and the stuff isn't cheap, but there's great confidence in performance too. I've heard a few rough stories from friends about some of their bullet performance though. One friend had one of their premium expanding bullets blow up without penetrating properly on a kudu, from a .308, so not like it was blowing up from velocity. That said, if their claimed ballistics are accurate, they load very hot, which is also interesting.

Also, the slow-mo camera of the impact in that video is excellent. About the best I've seen.