Actually I don’t have much criticism of this episode from a firearms point of view. Mainly because there wasn’t that much data, but let’s get started.
1) The projectile recovered from autopsy was too badly damaged for comparison purposes. Well it was supposed to be a 9mm Luger projectile fired from a SIG P226. In my experience, most 9mm Luger projectiles are 115gr full metal jackets (FMJ). The many autopsy 9mm Luger projectiles I’ve looked at have never been that badly damaged as to prevent comparison analysis — or at least give it a try. There even hitting bone (ribs most likely in this case), there wouldn’t have been that bad of damage.
2) The SIG P226 is a semi-automatic pistol, which means after it was fired, an empty casing should have been ejected out, and recovered during the crime scene investigation. Even if the victim in this case had Wolverine’s Adamantium skeletal structure, the casing should have had plenty of information for comparison purposes.
