The barrel is scored internally with a number of shallow spiral grroves, called: (A) Rifling, (B) Choking, (C) Blackening, (D) Tattooing
Answer is A. Rifles The barrel is scored internally with a number of shallow spiral grooves varying from 4-7 and most commonly 6. These grooves are called rifling. Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 136