Quote Originally Posted by pacodelahoya View Post
If I'm not mistaken, a recently retired fbi forensic guy said that most of the ballistics matching is smoke and mirrors, I believe there is a thread on it in here.
1000 posts, yay me..
Welcome to the club! Ain't it grand.

I seem to remember reading that they can identify barrel twist, and major grooves, but not necessarily the specific gun unless there are unusual scratches that can be specifically identifed.