QUESTION

Describe two major limitations of crime-scene reconstruction. At the end of your report answer add a section that estimates the distance from the shooter-to-target based on the descriptions of the bullet holes:

A few widely scattered gunpowder particles with no soot around the entrance hole.
A dark ring around the bullet hole but no soot or gunpowder particles.
A halo of soot surrounding the entrance hole along with scattered specks of powder grains.
Scorch marks and melted fibers surrounding the entrance hole.