Just to clarify, my m96 is currently a 30-06.
I have tried to take a shot at 300m. My zero is at 330 yards (so still slightly above zero at 300m) to maximize the max point blank range. I was using winchester etips 180gr. It was a good, well placed shot. No wind. The moose went down like a ton of bricks for several seconds (10s more or less), then got back up and limped into the wood. We never found her as there was no blood trail ;-(
One of our theories is that the bullet never existed, which is why there was no apparent blood trail
Experience has shown one of our group, that a 300 wm would of exited and would of had better chance of leaving a blood trail.