FSC100H5 Lecture Notes - Lecture 19: Firing Pin, Shotgun Shell, Cibin
Document Summary
Firearm investigations: was this gun to kill that person, did these bullets come from that gun, was it really self-defence?is this a case of suicide, or is foul play involved, bullet comparison, weapons function. Has it been modi ed: gunpowder residue detection. On clothes, hands & wounds: muzzle-to-target distances. Firearms identi cation: often confused with the term ballistics: The study of a projectile in motion: inside the rearm, after it leaves the rearm, when it impacts the target, firearms id based upon a basic idea. A harder object makes a softer one and transfers its microscopic irregularities to that object. Firearms: almost every gun is based on the same simple concept. Apply explosive pressure behind a projectile to launch it down a barrel: crime scene personnel will encounter three main types. Ammunition (handguns and ri es: cartridge case, primer, propellant, projectile. Bullets: made of lead, sometimes jacketed with brass, copper, or steel, bullet size: diameter (caliber or gauge)
