There was a Citations Needed podcast about pseudoscience in the criminal justice system: https://citationsneeded.libsyn.com/episode-94-the-goofy-pseudoscience-

There was a Citations Needed podcast about pseudoscience in the criminal justice system: https://citationsneeded.libsyn.com/episode-94-the-goofy-pseudoscience-copaganda-of-tv-forensics https://citationsneeded.libsyn.com/episode-94-the-goofy-pseu... It's an interesting podcast, but their interviewee sucked and she didn't really cite any actual science; just hand waved away things. I've found the studies they cite on fingerprints (your fingerprint could match up with 1 in ~300 people; they're not as unique as once though -- the study that's often cited is from the FBI) but I can't find anything on gun/bullet print identification. Supposedly you can't match a bullet to a gun, especially with more modern firearms with precise milling. Yet all the sourced I've found should photos of bullets with distinct patterns that seem to match a particular firearm.