jimbobborg
Oddball caliber fan
Respectfully, you and I define "devastating" quite differently. 8 pellet 00 buck in a softball sized pattern to center mass will like produce what I consider a devastating wound to an unarmored target. #2 birdshot would like produce a bloody but shallow mess. The 00 SHOULD render him incapable of continuing the fight. The birdshot will require an eventual trip to the ER to dig out the shot.
Predator hunters use #2 and BBs to kill coyotes out to 40 yards, though some prefer T pellets. They obviously aren't concerned with how the pelt turns out, but I think you get the idea.