1 / 13

Bullet Trajectory

Welcome to Ballistics!. You’ll enjoy this one!. Bullet Trajectory . Notes on page 68-69. Sharpshooter. Firing Pin. Rifled barrel. Hammer. Trigger. Magazine. Parts of the Gun. Click to add text. Anatomy of a Bullet. Flash Hole. How is a Bullet Fired?. Pull the trigger

hugh
Download Presentation

Bullet Trajectory

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Welcome to Ballistics! You’ll enjoy this one! Bullet Trajectory Notes on page 68-69 Sharpshooter

  2. Firing Pin Rifled barrel Hammer Trigger Magazine Parts of the Gun • Click to add text

  3. Anatomy of a Bullet Flash Hole

  4. How is a Bullet Fired? • Pull the trigger • Hammer is pulled back • Hammer is pushed forward • Hits the firing pin • Hits the primer • Causes primer powder to spark • Spark goes through flash hole and ignites rest of gunpowder How a Revolver Works

  5. What happens to evidence? • Bullets • Shot forward with a given force • Stop when sufficient force is acted upon it (hits something that slows it down, gravity pulls it down) Land Groove – the little lines etched in the grooves are the striations

  6. What happens to evidence? • Cartridge cases • Ejected from semiautomatic guns (usually to the right) • Remain in cylinder in revolvers Semiauto vs Revolver

  7. Individual or Class? • There are class characteristics, but when you look at striations, bullets are individual evidence • Cartridge casings are individual because of the extractor and ejector marks

  8. Bullets - Individual! • Play video!

  9. Cartridge Cases - Individual

  10. Important Forces • Forward force of the bullet • Downward force of gravity • To some extent: • Wind speed

  11. Bullet Trajectory • Trajectory: path of the propelled bullet

  12. Determining Location of Shooter • Need 2 reference points to make a straight line • Bullet holes in an object such as a wall, window or furniture • Bullet holes in a victim (entrance and exit count as two!) • Straight line tells investigators that shooter was somewhere on that line

  13. Trajectory

More Related