Oh I meant sanding the die off of the firing pin so it doesn’t stamp a serial number onto the casings; the projectile gets marked by the rifling upon firing. Wakmrow posted an article above about how the rifling analysis is subjective, unrepeatable pseudoscience but I don’t think it mentions that polygonal rifling is distinguishable from traditional land & groove rifling. So if a defendant is caught with, say, a glock, finding polygonal rifling on recovered bullets would make such analysis more damning in that case.
Hmm, that’s only on the brass though, I guess marking the bullet would be significantly harder
Oh I meant sanding the die off of the firing pin so it doesn’t stamp a serial number onto the casings; the projectile gets marked by the rifling upon firing. Wakmrow posted an article above about how the rifling analysis is subjective, unrepeatable pseudoscience but I don’t think it mentions that polygonal rifling is distinguishable from traditional land & groove rifling. So if a defendant is caught with, say, a glock, finding polygonal rifling on recovered bullets would make such analysis more damning in that case.