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Flashcards in Ballistics Deck (41)
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31

Full Metal Jacket

Brass or copper coated; doesn't fragment

32

Weight of a bullet is measured in...

grains

33

What type of bullet can penetrate armor

Steel centered bullets

34

Barrel rifling

Grooves cut into the barrel to spin the bullet, leaves marks on the bullet which can be used for identification (4/right, 6/right, 6/left, 16/right)

35

Types of bullet tracing (5)

Caliber, grains, and type
Material it's made of
Rifling pattern
Distinguishing features
Blood on the bullet

36

Preferred firearm for crime and why

Shotguns; no rifling and harder to trace

37

Greiss test

Tests for nitrates (unburned gunpowder) on clothing and suspect's hand

38

Negatives of Greiss test

False negative - wash hands, gloves
Nitrates stop appearing after 48 inches

39

Higher velocity =

bigger impact

40

Air resistance is less effective in _____ altitudes

high

41

Physical ballistic evidence at the scene (4)

Wound entrance/exit
Final position of bullet
Environmental factors
Witness testimony