Automation in firearms identification: DCM microsystem 1121 as a caliber finder

The development is reported of a computerized system for determining the possible caliber designation(s) of the parent cartridge from the diameter/weight of a fired bullet. The proposed system has an in-built flexibility for future expansion by way of addition of data relating to new cartridges. It is also found to be amenable to easy, fast and automated search. The practicability of the entire project has been demonstrated with the help of the handgun projectile data compiled by Munhall using the DCM Microsystem 1121 facility available in the Central Forensic Science Laboratory, Calcutta.