Ballistics Flashcards
Explain why ballistic science is important?
Firearms were used in:
69% of the US murders
40% of robberies
21.6% of aggravated assaults
Handguns can be held and fired with ______. They are divided into ___ categories. Name them
one hand 3 revolvers semiautomatic pistols machine pistols
- Handguns
Revolvers have a _____ to hold bullets and short _____.
One pull of the trigger = ___ shot.
Shell casting remains in the ______ after firing.
cylinder cartridges
1
cylinder
- Handguns
Semiautomatic pistols have a ____ or a ____.
Each shot = __ shot.
empty shells are automatically _____.
magazine or clip
1
removed
- Handguns
Machine pistols, automatic. It fires ______ (as long as ______).
___ similar to semiautomatic pistols.
repeatedly
there is ammunition
clip
Rifles often use a ____ or a sliding ___ to eject the spent cartridge. They can be ___ or _____.
lever blot
automatic or semiautomatic
Shotguns don’t fire ____, but _____ filled with groups of ___. Those spread out in ____ pattern and the shot spread about an inch for each ___ feet of travel.
bullets shells pellets circular 3
Shotguns have no ___ in the barrel, so no ____ marks.
grroves
identifying
Intact bullets are ____ found, so bullets often considered _______.
rarely
trace evidence
How can we find the manufacturer of the gun?
chemical and physical composition of the bullet. powder in the bullets.
What information can be found with a recovered bullet?
1- a type of gun
2- trace evidence: paint, fibers
3- DNA flesh and blood.
What are the 3 limits of ballistic science when it comes to recovered bullets?
1- severely deformed
2- too small
3- damaged during recovery
____ bullets are soft, deform and fragment as they reach the target and they cause ____ damage.
Lead
tissue
Lead ___ bullets are different than Lead bullets because they are mixed with ____ and ____. They deform and fragment (more/less) than lead bullets.
Also, they have (more/less) penetrability.
alloy
tin antimony
less
more
Semijacketed bullets have a thin layer of ____ on the side.
They ____ and fragment upon impact.
brass
expand
Fully jacketed bullets are ____ covered with brass. They have a ___ penetrating power. They can penetrate body armour which is why they are called ______. Their jacket is made of ___, ____ and other synthetics.
completely
greater
cop killer
Teflon, nylon