One time, for fun (sort of), we rigged a paper bear head target on a slider track, pulled up and down about 12-16", by a string. Each prospective defender would have three seconds to fire his five or six hammer loads
from 15 yards, while the target was bounced up and down. Though doubtful a large bear would need three full seconds to close 15 yards, it was just an experiment with shooters having a fair amount of revolver skill,
but no one whose last name was Miculek. Shooting started with revolver in hand, at high ready.
The result: A few perimeter hits, which may or may not have bounced off the skull, and -zero brain hits.
Several shooters learned they could not fire even three aimed .44 Mag Revolver Max loads in three seconds.
Side note:
One shooter only fired three shots, total. He used this as his first opportunity to fire 300gr Hammer loads
in his 329Pd (25 oz. .44 Magnum). Three other shooters each fired one remaining shot, and decided
that was sufficient. While a charging bear would easily cancel such discomfort, and ignoring the feeling of getting hit in the palm by a major league baseball batter, the main difficulty was in pulling that revolver back down into position for the next shot.