My question was more along the lines of how many of the water buff died quickly from one shot. Not including spine and brain shots.

My experience is even with heart shots they take a while to die. If they are aggro that time can be enough if at close enough range to squash someone.

I'm not an expert, just what my experience has been and observations.

My experience with a double on elephant, is that it gave me a lot of confidence on approaching very close, both two barrels and a .450 calibre with good bullets. If I shot a .600 and shot it well, that would be double the confidence for the really big stuff in the thick.

What I find from the featured video, is that is a fun and entertaining video. And I wish I was hunting buffalo, lion and elephant myself ... tomorrow.