Parts of a Gun
Parts of a Cartridge
Impressions
Mix and Match
Firearms Evidence
100
This fires a single cartridge ejects the spent cartridge case and reloads itself each time the trigger is pulled.
What is a Gun?
100
When gases rapidly expand and force the bullet out of the ___________
What is the barrel?
100
Impressions left on the surface of the bullet after it has been fired from a firearm with a rifled barrel.
What is riffling impression?
100
Bullet is a type of _________.
What is projectile?
100
________________ characteristics are specific for a certain brand or type of firearm.
What is Class
200
Ridges located inside the barrel of the gun.
What is Spiraling Ridges?
200
A single unit of ammunation made up of a projectile, propellant, and primer, surrounded by the cartridge casing.
What is Cartridge?
200
The number of lands or grooves in a rifled barrel.
What is rifling number?
200
This firearm is a gun that fires a live cartridge, ejects the spent case, and reloads itself each time the trigger is pulled.
What is automatic?
200
Specific for an idividual firearm.
What is Induvidual Characteristics
300
The part of a firearm that hits the primer in a cartridge and causes it to explode.
What is Firing Pin?
300
A container for all the other parts of a cartridge.
What is Cartridge Case?
300
Tiny, microscopic scratches on the surface of the bullet. usually located inside the rifling impression.
What is Striations?
300
This can be found by rotating the bullet and counting the rifiling impressions present on the surface?
What is Rifling Number?
300
Size of the bullet found at the crime scene.
What is 9 milimeters?
400
A device that hold the cartidges and feeds them one at a time into the firing chamber of the firearm.
What is Magazine?
400
A complex chemical mixture that rapidly burns when ignited by a spark from the primer.
What is Smokeless Gunpowder?
400
No two fire arms will produce the exactly the same.
What is pattern of striations?
400
Any object that propelled by an explosive reaction.
What is projectile?
400
Type of gun that fired the bullet at the crime scene.
What is Taurus?
500
This makes the bullet spin as it travels through the barrell.
What is Rifling?
500
The chemical that explodes when struck by the firing pin. It sets off the gunpowder which fires the projectile.
What is a Primer?
500
Two types of impressions on a bullet, one being deep and easy to see, and the other being smoother and harder to see.
What are comentronal and polygoncel impressions?
500
An approximate measure of a bullets diameter
What is caliber?
500
This is not a class characteristic.
What is Conventional?
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