ABSTRACT
The combustion products of firearm discharge are both gaseous and solid compounds. The combustion products are retained inside the cartridge and the barrel during the travel of the projectile until it leaves the barrel. The nature and quantity of discharge residues depends upon the firearmammunition combination and on other allied factors. Whereas detection of discharge residues provides evidence of firing, its time-variant, quantitative estimation forms the basis of ascertaining the probable time lapse after firing.
6.1.1 Evidence of Firing and Unusual Firearms
