Originally Posted by clydefrog
I've posted remarks in the past about how I think the KE or kinetic energy level of a handgun round is highly under-rated.
Yeah, that KE number is real useful. If you were trying to stop someone attacking you, would you rather hit them with 400 ft-lb of KE or 1,000 ft-lb of KE?
My Suburban at just over 2 MPH has 1000 ft-lb of kinetic energy. The bullet I shoot out of my 9mm only delivers 400 ft-lb.
My personal bet is that someone hit with the 400 ft-lb of energy described above will stop what they're doing a lot quicker than someone hit with the 1000 ft-lb of energy described above.