My goodness! If that's what a ~30m/s ~120 rock can do, I would imagine a 50 or 60m/s ~150g rock would be absolutely devastating to a ballistic gel head like that.

True, it's not new information, but it helps to see just how powerful (and hence, dangerous) slings are 

Rat Man wrote on Oct 2^nd, 2024 at 12:54pm:

+1
Just a note.
A human body don't jump in the air during a violent blow. So the marks on the manikin don't correspond to reality.
Just my idea.

joe_meadmaker wrote on Oct 2^nd, 2024 at 6:15pm:

Yes. The shock wave would not be damped by the movement but would remain inside the body.
Just my idea.

I see the hit you're referring to.  I agree, there is a lot of movement with that one.  But I think most of the hits closely replicate what we might see if a human were to actually get hit by one of those stones.  The head shots and the hits toward the center, such as the one that strikes the throat area, don't move the target that much.  And if a stone of that size were to hit a person, there would certainly be some movement.  I agree though that the movement is definitely something to keep in mind when viewing a test like this.