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Ballistic Identification Technology


we’ve seen CSIS on TV using this

we’ve seen CSIS on TV using this technology to catch the bad guys but

technology to catch the bad guys but

technology to catch the bad guys but real-life cops find it just as useful hi

real-life cops find it just as useful hi

real-life cops find it just as useful hi I’m Rebecca Brayton and welcome to

I’m Rebecca Brayton and welcome to

I’m Rebecca Brayton and welcome to watchmojo.com and today we’re speaking

watchmojo.com and today we’re speaking

watchmojo.com and today we’re speaking with firearms specialist Andy Boyle to

with firearms specialist Andy Boyle to

with firearms specialist Andy Boyle to learn more about the integrated

learn more about the integrated

learn more about the integrated ballistics identification system so why

ballistics identification system so why

ballistics identification system so why do we start by having you tell us what

do we start by having you tell us what

do we start by having you tell us what is Ibis one of these is a machine that’s

is Ibis one of these is a machine that’s

is Ibis one of these is a machine that’s used to photograph the markings on

used to photograph the markings on

used to photograph the markings on bullets and cartridge cases after

bullets and cartridge cases after

bullets and cartridge cases after they’ve been fired through a gun they

they’ve been fired through a gun they

they’ve been fired through a gun they actually end up with a unique pattern of

actually end up with a unique pattern of

actually end up with a unique pattern of scratches on variations that will repeat

scratches on variations that will repeat

scratches on variations that will repeat from firearm to firearm but are always

from firearm to firearm but are always

from firearm to firearm but are always unique how does the system affect

unique how does the system affect

unique how does the system affect investigations today traditionally it’s

investigations today traditionally it’s

investigations today traditionally it’s the detectives that actually come back

the detectives that actually come back

the detectives that actually come back to the farms examiner and say there was

to the farms examiner and say there was

to the farms examiner and say there was a shooting last night it seems like it

a shooting last night it seems like it

a shooting last night it seems like it was this guy who did it we got his gun

was this guy who did it we got his gun

was this guy who did it we got his gun is this the gun that did it they might

is this the gun that did it they might

is this the gun that did it they might not get a match off of that crime scene

not get a match off of that crime scene

not get a match off of that crime scene but now both those pieces of evidence

but now both those pieces of evidence

but now both those pieces of evidence are in the system it won’t forget and

are in the system it won’t forget and

are in the system it won’t forget and any amount of time later it might come

any amount of time later it might come

any amount of time later it might come up with a hit and the farm’s examiner

up with a hit and the farm’s examiner

up with a hit and the farm’s examiner and call the detective up and say

and call the detective up and say

and call the detective up and say remember that crime scene from two

remember that crime scene from two

remember that crime scene from two months ago that we didn’t have it in for

months ago that we didn’t have it in for

months ago that we didn’t have it in for you the gun was just used again in a

you the gun was just used again in a

you the gun was just used again in a bank robbery last night would you be

bank robbery last night would you be

bank robbery last night would you be able to show us some of the defining

able to show us some of the defining

able to show us some of the defining characteristics of a bullet in a casing

characteristics of a bullet in a casing

characteristics of a bullet in a casing yeah absolutely so your cartridge has

yeah absolutely so your cartridge has

yeah absolutely so your cartridge has got four main components your bullet the

got four main components your bullet the

got four main components your bullet the cartridge case itself the primer on the

cartridge case itself the primer on the

cartridge case itself the primer on the back and gunpowder on the inside during

back and gunpowder on the inside during

back and gunpowder on the inside during the firing sequence what happens is the

the firing sequence what happens is the

the firing sequence what happens is the firing pin of the firearm strikes the

firing pin of the firearm strikes the

firing pin of the firearm strikes the primer which causes the spark inside the

primer which causes the spark inside the

primer which causes the spark inside the spark makes the powder burn which builds

spark makes the powder burn which builds

spark makes the powder burn which builds a pressure and causes the bullet to go

a pressure and causes the bullet to go

a pressure and causes the bullet to go down the barrel the rifling marks inside

down the barrel the rifling marks inside

down the barrel the rifling marks inside the barrel that cause the bullet to

the barrel that cause the bullet to

the barrel that cause the bullet to twist are actually dragged across the

twist are actually dragged across the

twist are actually dragged across the surface of the bullet and so you get

surface of the bullet and so you get

surface of the bullet and so you get these channels these grooves basically

these channels these grooves basically

these channels these grooves basically that have a unique pattern of Shriya all

that have a unique pattern of Shriya all

that have a unique pattern of Shriya all the way around all that pressure to push

the way around all that pressure to push

the way around all that pressure to push the bullet down the barrel equal and

the bullet down the barrel equal and

the bullet down the barrel equal and opposite reaction pushes that cartridge

opposite reaction pushes that cartridge

opposite reaction pushes that cartridge case straight into the breech wall and

case straight into the breech wall and

case straight into the breech wall and so whatever pattern is on that wall got

so whatever pattern is on that wall got

so whatever pattern is on that wall got stamped across the surface of the

stamped across the surface of the

stamped across the surface of the cartridge case and those are two areas

cartridge case and those are two areas

cartridge case and those are two areas there on the bullet as well as on the

there on the bullet as well as on the

there on the bullet as well as on the cartridge case and giving you a neat

cartridge case and giving you a neat

cartridge case and giving you a neat pattern that that will reproduce from

pattern that that will reproduce from

pattern that that will reproduce from shot to shot the machine we’re looking

shot to shot the machine we’re looking

shot to shot the machine we’re looking at here is called bullet tracks it’s

at here is called bullet tracks it’s

at here is called bullet tracks it’s used to do a 3d topographical scan of

used to do a 3d topographical scan of

used to do a 3d topographical scan of the markings on the bullets surface you

the markings on the bullets surface you

the markings on the bullets surface you mount the bullet underneath the sensor

mount the bullet underneath the sensor

mount the bullet underneath the sensor and it’ll be rotated 360 degrees around

and it’ll be rotated 360 degrees around

and it’ll be rotated 360 degrees around while the actual sensor is capturing the

while the actual sensor is capturing the

while the actual sensor is capturing the surface topography as that

surface topography as that

surface topography as that light shines across you can even still

light shines across you can even still

light shines across you can even still make out that strident pattern it’s

make out that strident pattern it’s

make out that strident pattern it’s doing an in-depth scan right now so now

doing an in-depth scan right now so now

doing an in-depth scan right now so now with the acquisition completed over here

with the acquisition completed over here

with the acquisition completed over here what we’ll do is a cartridge case

what we’ll do is a cartridge case

what we’ll do is a cartridge case acquisition on the rash tracks machine

acquisition on the rash tracks machine

acquisition on the rash tracks machine so the machine we’re looking at here is

so the machine we’re looking at here is

so the machine we’re looking at here is called brass tracks and it’s used to

called brass tracks and it’s used to

called brass tracks and it’s used to photograph the markings on the head of

photograph the markings on the head of

photograph the markings on the head of the cartridge case we’re going to take

the cartridge case we’re going to take

the cartridge case we’re going to take photographs of the breech face marks on

photographs of the breech face marks on

photographs of the breech face marks on the primer we’re going to do a close-up

the primer we’re going to do a close-up

the primer we’re going to do a close-up of the firing pin impression as well and

of the firing pin impression as well and

of the firing pin impression as well and we’re also going to do a close-up of the

we’re also going to do a close-up of the

we’re also going to do a close-up of the ejector mark on the side on this

ejector mark on the side on this

ejector mark on the side on this cartridge case you’ve got the silver

cartridge case you’ve got the silver

cartridge case you’ve got the silver disc on the back of it we’re going to do

disc on the back of it we’re going to do

disc on the back of it we’re going to do some photographs of that silver disc the

some photographs of that silver disc the

some photographs of that silver disc the primer so we’ll do that right now

what it’s going to do now is what we

what it’s going to do now is what we call the full head stamp it’s going to

call the full head stamp it’s going to

call the full head stamp it’s going to take a series of nine photographs which

take a series of nine photographs which

take a series of nine photographs which it will then reconstruct into one giant

it will then reconstruct into one giant

it will then reconstruct into one giant image that’s about the entire head of

image that’s about the entire head of

image that’s about the entire head of the cartridge case in one giant photo so

the cartridge case in one giant photo so

the cartridge case in one giant photo so what we’re looking at now is a close-up

what we’re looking at now is a close-up

what we’re looking at now is a close-up of the breech face information all the

of the breech face information all the

of the breech face information all the striations that were marked on that

striations that were marked on that

striations that were marked on that breech base it was photographed we’re

breech base it was photographed we’re

breech base it was photographed we’re able to look at them side by side and

able to look at them side by side and

able to look at them side by side and move the hairline back and forth to see

move the hairline back and forth to see

move the hairline back and forth to see how much is common between the reference

how much is common between the reference

how much is common between the reference exhibit and the test one here’s your

exhibit and the test one here’s your

exhibit and the test one here’s your reference this is a guy that was

reference this is a guy that was

reference this is a guy that was standard during the correlation and this

standard during the correlation and this

standard during the correlation and this is a guy that was in the database that

is a guy that was in the database that

is a guy that was in the database that came up as the best potential match and

came up as the best potential match and

came up as the best potential match and already the naked eye you’ve got a lot

already the naked eye you’ve got a lot

already the naked eye you’ve got a lot of similarities here with the within the

of similarities here with the within the

of similarities here with the within the shear marks also the striations on the

shear marks also the striations on the

shear marks also the striations on the surface you can see with the ring light

surface you can see with the ring light

surface you can see with the ring light image that we’re looking at there’s some

image that we’re looking at there’s some

image that we’re looking at there’s some common details between the two so we’re

common details between the two so we’re

common details between the two so we’re going to look at now is the correlation

going to look at now is the correlation

going to look at now is the correlation results two bullet score so what we want

results two bullet score so what we want

results two bullet score so what we want to do now is see how much common

to do now is see how much common

to do now is see how much common information there is between these two

information there is between these two

information there is between these two exhibits by sliding them together and

exhibits by sliding them together and

exhibits by sliding them together and also by moving that hairline back and

also by moving that hairline back and

also by moving that hairline back and forth

forth

forth it’s what the tracks machines are

it’s what the tracks machines are

it’s what the tracks machines are enabling farms examiner’s to do now in

enabling farms examiner’s to do now in

enabling farms examiner’s to do now in the crime lab is to scan through

the crime lab is to scan through

the crime lab is to scan through thousands of reference exhibits now

thousands of reference exhibits now

thousands of reference exhibits now prosperous diction as well that are just

prosperous diction as well that are just

prosperous diction as well that are just numbers that would never be possible and

numbers that would never be possible and

numbers that would never be possible and it’s really given them new tools to

it’s really given them new tools to

it’s really given them new tools to create links and crimes and get

create links and crimes and get

create links and crimes and get criminals off the street

”

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