A good Junk Science report on Fox today.
[A]n October 2001 report by California state ballistics experts — hushed up by the California attorney general’s office — concludes that ballistic fingerprinting isn’t feasible right now.
It gets better:
Maryland and New York already require ballistic fingerprinting. So far it hasn’t helped convict a single criminal in Maryland despite “fingerprinting” 17,000 guns sold since January 2000. New York hasn’t had success either.
Read the whole thing.