Poodleshooter, you'll find all manner of medical experts who'll tell you that can't happen.
Trouble is, nobody ever told the dead deer.
Deer do weird stuff. I've seen some deer get hit in the heart, go down, and get up and run 50 or so yards. Others, also hit in the heart, flop over just like they're permanently dead.
And that's why I talk in generalities, possibilities and "maybes" and "mostlies" about what deer do and what bullets do and what happens when they get together. The only "always" I've seen is what happens when you hit 'em in the white spot--they tuck their little legs up and quit, right there.