The Jaw area and nose area make up a suprising amount of the head on a rabbit, I've seen one person shoot and it went through the nose with a bizmag, in one side out the other, not much energy transfer at all. Bunny began to run, paused just as my partner for the shoot had a follow up shot almost immediately to the cranium, and lights out!
Later that day, I hit a bunny, fairly young one, the pellet was carried a couple of mm's to the right, bunny went down a second or two later it started kicking and I knew that wasn't normal (they usually kick when they land) as I legged it over the darn th