Had a new experience a couple of days ago. I needed more meat in the freezer and the bucks weren't cooperating so I shot a doe. I was using a 6.5 Grendel and aimed for the neck just in front of the shoulders. Instead, the bullet hit halfway between the shoulders and the head and obviously cut the jugular. The deer's reaction surprised me. It hit the ground and spun in two complete circles on its side while bleeding out. Took about 3 minutes or so to die.

Here's the question. If I only damaged the circulatory system, why didn't it run until bleeding out? If I also damaged the CNS so that it couldn't run away, how was it able to keep running in place on its side after hitting the ground and spin in circles?

After hunting for over 60 years, I still run into different reactions from these creatures. This is a new one to me. Anyone else experience something similar?