How good a match is it? Putting statistics into forensic firearm identification

(National Institute of Standards and Technology (NIST)) When comparing bullets or cartridge cases, a forensic firearms examiner can offer an expert opinion as to whether or not they match. But they cannot express the strength of the evidence numerically, the way a DNA expert can when testifying about genetic evidence. Now, a team of researchers at the National Institute of Standards and Technology (NIST) has developed a statistical approach for ballistic comparisons that may enable numerical testimony. 

from EurekAlert! - Social and Behavioral Science http://ift.tt/2FVMXJu