SHOT GUN INJURY

Exit Wound -• Is usually not present and may

be larger ( than entry wound ) with everted edges.

• There may be evidence of individual pellets having exited separately.

RangeRange RifledRifled Smooth boredSmooth bored

ContacContactt

Scorch X blackX Scorch X blackX tattoo Xtattoo X

muzzle & CO Ymuzzle & CO Y

Scorch X blackX tattoo Scorch X blackX tattoo XX

muzzle & CO Ymuzzle & CO Y

CloseClose Scorch,blac,tato Scorch,blac,tato abrasion & abrasion & grease collar Ygrease collar Y

Scorch, black,tattoin YScorch, black,tattoin Y

Wad YWad Y

Abra,gr collar XAbra,gr collar X

NearNear Scorch XScorch X

black,tattoing, black,tattoing, abrasion& abrasion& grease collar Ygrease collar Y

Scorch XScorch X

Shots disperseShots disperse

black,tattoing Yblack,tattoing Y

Abra,gr collar XAbra,gr collar X

DistanDistantt

Scorch, black XScorch, black X

abrasion& abrasion& grease collar Ygrease collar Y

Scorch, black tatto X Scorch, black tatto X Shots disperseShots disperse

IDENTIFICATION OF FIREARMS

• The fire arm ‘Bullet Finger printing’• The comparison microscope -‘ Crime bullet ’ and ‘ Test bullet

’

DERMAL NITRATE TEST ( PARAFFIN TEST )

It is a method to find out whether a suspect

discharged a firearm recently, or not.PRINCIPLE:• Whenever a firearm is discharged, some

gun powder residue always contaminates the hand that holds the weapon.

• The tests detects the presence of nitrates & nitrites in the powder residue