Ummm...

What part of the head did you hit the deer in? If you hit the jaw, with ANY cartridge, it could very easily get back up. In order to kill a deer immediately, you need to hit the spine or brain, obviously you hit niether on that shot. As far as a deer running more than 50 yards, thats not that bad. Heck, even 100 yards isn't too bad. How much time does it take a deer to cover 50 yards? Not very long. If there is still air in their vessels, they can cover some ground in a short amount of time. If you hit the deer in the lungs, heart, or liver, the deer is dead. My first deer was hit with the .30-06 and 165 Winchester Power Points. I hit the heart, and that little 150 lb doe STILL covered 300 yards with no heart!! She still had plenty of air in her blood to get her that far, thats all. Now is the .30-06 a bad cartridge because of that? No. I have killed 3 more with the .30-06 and 165 grain soft point bullets. It works. Put the bullet in the boiler room and you have a dead deer, the difference between the Big 7 and the .30-06 isn't enough for the deer to notice!!