A Simple Way to Maximize the Number of Hits From Ballistic Imaging When Processing Capacity is Limited

Many U.S. organizations lack the resources to enter all cartridge cases from crime scenes and test-fires into the National Integrated Ballistic Information Network and search for hits. This paper summarizes the main question in (1): if ballistic imaging capacity is limited (i.e., less than the arrival rate of newly acquired cartridge cases), which specific cartridge case types should be processed to maximize the number of cartridge cases that generate at least one hit? This problem is solved using a mathematical model, and data from Stockton, CA, are used to show that a simple scheme– prioritize crime scene evidence over test-fires, rank calibers by their likelihood of achieving a hit, and process only the higher-ranking calibers– can significantly increase the number of hits generated.