A case of murder with gunshot is repoed. A metal bullet is recovered from the body. Primary and Secondary markings on a metal bullet can be used for
A i.e. Identification of weapon - Primary markings (class characteristics) and secondary markings (metallic fouling, individual or accidental characteristics) on a bullet can be used for identification of weaponQ. - Bullet is picked up with handsQ. Gunshot residue on hands can be detected by Dermal nitrate testQ.
Identification of weapon
To know the range of firing
Severity of tissue damage
To known tome of crime