Over several decades, technology has significantly improved forensic sciences. One new technology is model. The two- dimensional images of bullets are essentially photographs, often black and white, with a distinct limit of detail. The use of technology has change the methods of analyzing the bullets in firearm examined. Analysis of these projection ballistic can help determine where a weapon was fired, based on shells and cartridges left at the crime scene. Comprehensive ballistic identification system require gun manufacture to test-fire the firearms it produce and store images of the ballistic marking left on cartridges. Imaging for forensic comparison of bullets and cartridge case provides specific advantages in reach. Forensic Investigators are developing and improving databases that identify ridge and groove markings left behind from fired rounds
