Injury depends on how much force is applied over how much area to what kind of tissue.
Bullet wounds cause entrance and exit wounds.
The entrance wound is usually smaller than the exit wound, and smaller than the caliber of the bullet. Histologically, the wounds are characterized by laceration and destruction of tissue and significant hemorrhage. Can be lethal. Robbins Pathologic Basis of Disease. Search Medline at National Library of Medicine Please be patient during transfer.