You recover a bullet from the wall at a crime scene and you need to know what caliber of gun shot this bullet. explain how you would determine the caliber of this bullet

The damage or deepness of the hole in the wall.

Explanation:

To determine the caliber of the gun used to fire a wall, you'd need to look into specifics. How deep is the hole? How wide and tall is the hole? Did the hole cause other parts of the wall to crack? All of these questions need to be taken in count while investigating the crime scene.