Thanks for putting that data up. Rest assured that when one takes 400+ grain slugs and gets the velocity up into the high teens, that it does get ones attention on the back end. It's good to warn folks when they're sitting down at a bench for the first time.
Another interesting aspect with those heavy slugs is torque. I've never noticed it with my whizzum magnums, but with my 45-70 and 90, one can feel the rifle twist as well as recoil.
