I believe that about every gel test that I have seen even with large caliber magnum handguns the Gel might jump and wiggle a bit but never seen one knocked off the table.
and a Gel block doesn't weigh anywhere near what a man does.
now BIG rifles are a different matter.
We have a 264 wm, 300wbym, 338 lapua mag, and the penetration all the way through. A 500 S&W, WAS INTERESTING as they individuals were doing bullet development. Enjoyed watching testing and the refinement of the bullets after each shot. Either way
would not want to experience it personally either...