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Ballistics Notes. Firearms. Many different types When on the scene FIND IT!!! Log (SMID) Process it. Anatomy of A gun. Different Types. Revolver Semiautomatic Submachine guns Hunting Rifle Shotgun. Anatomy of a bullet. Taken from Wikipedia*.
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Firearms • Many different types • When on the scene • FIND IT!!! • Log (SMID) • Process it
Different Types • Revolver • Semiautomatic • Submachine guns • Hunting Rifle • Shotgun
Anatomy of a bullet • Taken from Wikipedia* (1) bullet(2) casing(3) gunpowder(4) rim(5) primer
Types of Ammo • Full Metal • Hollow Point • Jacketed • Wadcutter • Soft points
Shooting Scene Protocol • Swab all suspects for gunshot residue • Mark the position of cartridge cases • Account for every shot fired • Find weapon and check for spent ammo • Count cases • Search exhaustively to locate and retrieve all bullets
Shooting Scene Protocol Cont. • Reconstruct all bullet trajectories • Laser • Computer program • Document the scene with photography and video • Recover any evidence and weapons from the crime scene
Presumptive Done in the field Problems! Tests for GSR will only indicate presence of: - - - Confirmative Done in the Lab Tests will confirm the presence of: Types of tests
In The Lab • Compare Ammunition Three Types of Equipment 1. 2. 3. • Test Weapons Three ways to test: 1. 2. 3.
Marking on Ammo • Rifling Marks • Striations • Firing Pin Marks