RE: Marginal hits that resulted in quick kill
I had a buck come in very aggressively to a rattling sequence a couple years ago, and I had perfect preparation time and everything. The deer's standing 20 yards out, slightly quartering away. I come to full draw, relax, aim, squeeze... and Plop!, he falls over in his tracks.
Since it's definitely not my first bow-killed deer, I know something's obviously up. I strained for about thirty seconds looking at what I saw before me until I spotted the arrow shaft sticking straight up between his eye and ear. I re-traced the flight of the arrow until I noticed a miniscule broken twig between us.
One of two extremely short tracking jobs I've had (in other words, they dropped in their tracks!). The other, a huge doe last year, droppped in her tracks, and I really don't know why. I caught her a tad high in her shoulder from a pretty high perch, but yet she just crumpled on the spot.
Probably all that kinetic energy being produced by the ol' Mathews! <img src=icon_smile_wink.gif border=0 align=middle>
Discipline -- not desire -- determines destiny.