RE: pre-shot deer
Yes - VERY IMPORTANT! As Farm Hunter said, you should ALWAYS be careful because there could very well be a broadhead inside a deer.
That's why when I dress a deer out I always approach the job as if the deer is full of braodheads. I also ask the young ones when they get there first deer and are ready for that first gutting, "If this deer is dead, can it still hurt you?" Then I tell them of the dangers of imbedded broadheads.
But to answer the question.......I have never found a broadhead or bullet in one that I have taken, but have found wounds.
Be careful out there!