Mikelang15 - was there anything wrt 40 S&W.
Also, can you find the title of the You Tube clip?
Personally, I think the debate should go toward ballistics and bullet types.
It's the transfer of energy that relates to stopping power and that depends a lot on the bullet.
I've had a similar debate about AR15s, AK-47s and AR-10's.
Somehow when they chose a pistol they selected a 40 over the 9mm for stopping power.
But they want AR-15s over AR-10's (.223 over .308 with 2-3 times the energy)