Class Notes (838,386)
United States (325,381)
CJ 210 (31)
Prof.Allen (10)

11:14 Firearms.odt

2 Pages
Unlock Document

Criminal Justice
CJ 210

Firearms: • Caliber is always an approximation • Shotguns can fire pellets or “shot” or single projectiles called “slugs” • Interior of a shotgun barrel is smooth so that nothing deflects or slows down the pellets as they traverse its length • Diameter of a shotgun is call gauge and is the number of lead balls with the same diameter • Ammunition is typically a self contained cartridge that is composed of one or more projectiles, propellant and a primer • Two major types of ammunition: Cartridges for handguns and rifles and shells for a shotgun • Bullets can be lead, fully jacketed, and semi-jacketed • Lead bullets are lead hardened with minute amounts or other metals and formed into the desired shape • Afully jacketed cartridge has a lead core and is encased in a harder material like steel • Asemi-jacketed cartridge has a metal jacket that covers only a portion of the bullet with the nose often exposed • Propellant is the fuel that propels the projectile down and out of the barrel • Primer is what ignites the propellant; Contains: • Small metal cup containing a percussion sensitive material that creates enough heat to ignite the propellant when struck • You can individualize a bullet to a particular weapon because friction transfers lands and grooves and striations to bullet's exterior • Collection: Locate, photograph, and measure the location of all bullets, bullet holes and spent cartridges; used to generate three dimensional data about the shooting • No two firearms produce the same unique marks on fired bullets and cartridge cases • Firearm evidence can link a person or persons to multiple crimes • Two automated search systems were developed in the 1990's DRUGF
More Less

Related notes for CJ 210

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.