The gas (flute) marks on cartridge cases.
Ramiah
R
R
Ballistics Division, Forensic Sciences Department, Madras, India.
Rajan
P
P
D005389:Firearms / Q000331:legislation & jurisprudence*; D005554:Forensic Medicine; D006801:Humans; D014948:Wounds, Gunshot / Q000473:pathology