This is kinda a strange question but it does relate to my Changeling game so I'll ask it here. Is it possible to tell the difference between the gun shot residue left by two seperate pistols ?
( P.C.'s Motley run a gang and my character has started doing some dodgy stuff. He belongs to a gun club where he uses a licensed pistol. So I wonder if I use a unlicensed gun in a crime can the police prove the residue didn't come from me firing my perfectly legitimate pistol at the perfectly legitimate gun club)