Originally Posted by Sully2
To my thinking...the proper bullet for any animal ( different animals...different bullets) would penetrate without stopping until just under the skin on the opposite side. Hence ...100% of its energy was applied.
When they burst thru and go slamming into dirt and trees...some amount..????...of energy was waster..!!!
Sully has the right answer here. The bullet did it's job by opening a big wound channel, and hitting in the vitals where you aimed it. The problem is that when a bullet does not slow down enough within the animal it doesn't transfer all of it's energy to the animal. Had you hit it in the shoulder blade the bullet would have transferred more energy and dropped the deer in it's tracks, not to mention the fact that the energy would have traveled into the spine as well causing even more damage.
I have seen heart shot deer run like you described, and I have seen them back up and do a back flip. It just depends, but it sounds like the bullet opened up and did it's job from your description of the exit wound. There just wasn't enough energy transfer to drop it in it's tracks.