Firearm Identification & Ballistics

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Presentation transcript:

Firearm Identification & Ballistics

Firearm Examiner Expert in the id of firearms that involves the id, comparison, and testing of: Bullets Cartridges Gunshot residue Science of ballistics Trace metal detection

Career Exploration Physics Mathematics Analytical chemistry Biology High use of microscopes Great interpretation of scientific research

Classification of Guns 4 types of guns 4 types of bullets 4 types of cartridge marks

What Bullets are made of Tin Antimony Copper Zinc

What cartridges are made of Lead Crass Gun powder (potassium nitrate, charcoal, and sulfur)

Bullet Comparisons Barrels are unique to the manufacturer Each manufacturer creates a unique pattern of inside, spiral grooves These are called “lands” Class characteristics produce a clockwise or counterclockwise spin

Bullet Comparison Comparison microscopes are used to see the fine lines or striations No 2 barrels have an identical striation pattern which adds to how cases showing the identity of the shooter is proven

Bullet Comparison IBIS (Integrated Ballistic Identification System) is a database compiled from the FBI and the ATF. “ballistics fingerprinting” network of data about all guns reported in crimes

Home Learning Firearms Identification &Ballistics Analysis Questions Part 1 are due Thursday. PowerPoint Presentation and questions will be posted online.