Despite its usefulness, "bullet fingerprinting" is not always a definitive proof of guilt. Several factors can complicate or even invalidate a match. 1. Barrel Evolution
: The pin strikes the primer at the back of the casing, leaving a unique indentation. bullet fingerprinting
As a bullet travels through a gun barrel, it is gripped by —spiral grooves machined into the metal to make the projectile spin for stability. Despite its usefulness
: The Integrated Ballistic Identification System (IBIS) is the hardware and software used to capture these high-resolution 3D images. bullet fingerprinting