Because the bore of a firearm has small imperfections
and the bore is harder than the bullet of a cartridge, it will always leave
striations. These markings will always be the same for any bullet fired from a
particular gun. IBIS compares the item being entered into the system to all
previous information entered, in an attempt to identify the firearm used.
Ballistics is a science that deals with the motion of projectiles.
Firearms cartridges are made up of the lead projectile called a bullet; the
casing; powder; and a primer or charge. Investigators look for shell casings at
any crime scene that involves a shooting so they can match the striations from
the spent cartridge to the murder weapon, if it is ever found.
There are several reasons why the condition of a
bullet casing will prevent a ballistics expert from making a comparison. I know
this because I’ve watched so many CSI reruns, and read HONOLULU CSI.
What situations would make it impossible to run a
casing through IBIS?
I don't know much about firearms, fired a rifle in 1964 in the army, but not since.
ReplyDeleteI got bored with all those csi,ncis etc shows they all got to be the same boring thing.
Sorry Gail, cannot comment on ballistics.
Very interesting!. Not a fan of the CSI shows, but I do love knowing the how's and why's behind their investigative techniques. Thank you for sharing this.
ReplyDeleteNo I know something I didn't before. Now to the question, is this a test? Will I find the answer in your book? Maybe if it was damaged in a fire ,that's the only thing I can think of.
ReplyDeleteI believe it is almost impossible to ID a shotgun because there is no bullet.
ReplyDeleteCSI? I know it is hugely popular (good for all) but I never liked it much. Too much baloney in between facts and I didn't like sorting it out. lol