How is the path of a bullet determined?

ATest- firing a bullet from different positions gets one that matches the gunshot wound or bullet hole.

BA rod or laser line is inserted into the wound or bullet hole and points to the direction of the shooter.

CA comparison microscope can show the direction of the bullet by close-up examination of the wound.

DThe size of the gunshot wound is determined. The larger the wound, the more acute the angle of the bullet's.