Another Memphis 1980s anecdote:
I personally know both the shooter and the person shot.
Victim was shot in chest with a Rem 100 12 ga. with #8 birdshot at <10 feet.
Victim had consumed quite a bit of alcohol and cocaine. Victim ran 35 yards before collapsing from blood loss. Gunshot required removal of 1/2 of right lung, and shell wadding was removed from his spine. Shooting happened within 1/2 mile of ER.
Buckshot would have made no difference. Shot placement might have made a difference.