Chapter 10: Firearms Flashcards
trajectory analysis
internal, external, terminal
internal ballistics
at crime lab by firearms examiner, function and operation of weapon, bullets, casings. ejection patterns and GSR.
terminal ballistics
by pathologist/ME. defines path of bullet, entry/exit wounds, range determinations.
range determinations
GSR known/questioned tested at different ranges.
loose contact
close proximity to skin, small gap.
close contact
pressed to the skin.
near contact
no more than 5 inches from wound.
indeterminate range
no characteristics, no conclusions.
intermediate range
5-40 inches from wound.
external ballistics
crime scene analyst at scene, path of bullet through aspects at the scene, defines possible and impossible trajectories.
trajectory kits
trajectory rods, centering guides, angle finders, sometimes lasers.
recover bullets
in paper, do not clean or mark
evidence with biological fluids
air dried and sent to lab
cartridge case recovery
package each in own case unless found at same location
slug
from a shotgun shell
