In Edmonton in the 70's a nut case wielding a shotgun loaded with birdshot entered an Atco trailer (being used as a coffee room) at the Stelco plant. He shot one man in the leg behind the knee. He nearly lost his leg, there is a big chunk of it missing to this day. There are still dozens of pellets imbedded in his bones, that the surgeons do not want to remove. He walks with a plastic brace from his calf to his thigh, and has surgery every few years.
The madman shot another Stelco employee who died.
Please do not think that birdshot is not lethal, or that it only causes flesh wounds. While 00 Buck is no doubt the better stopper, anyone so unfortunate as to be shot by a load of #7 1/2 at "inside the house" ranges would be very lucky to live.
Sharptail