Probably most, if not all of us have lost a deer. It happens.
What really hurts is you KNOW which direction it went and spend a couple hours looking that way and not find it.
Then a week later your cousin tells you about the dead deer he can see from the road which is in the opposite direction of where you looked. He made a big circle and died about 75 yards from where I hit him. Cry.
Oh, and I always bring extra shells - and now you probably will too. 😉