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STATE FORENSIC SCIENCE LABORATORY

Department of Home and Hill Affairs

Police Establishment Branch

Govt. of West Bengal

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Ballistics

The work in the ballistics division involves the identification & comparison of firearms, ammunition and parts thereof. The work includes-

  • Examination of the arms and ammunition recovered under Arms Act and other provisions of Law
  • The "stoichiometry" of the firearm and its working condition
  • Restoration of erased marking on the firearm
  • To determine whether the spent cartridge / bullet / percussion cap / pellet / wad have been fired through firearm in question or not
  • To find out whether the ammunition is live or not
  • Examination of target materials having suspected bullet/pellet/shot holes
  • Determination of range and direction of firing
  • Examination of GSR in hand swabs in suicide, homicide and deaths due to encounter
  • Examination of place of occurrence and reconstruction of crime scene
  • Measurement of wound ballistic parameters
  • Pre-requisites of registration of Ballistics cases in FSL
  • The name of the deceased, sex, and age are to be invariably mentioned in case of Biological / P.M. materials
  • Seals on exhibits must be affixed with the specimen lac seal
  • Control samples should be sent wherever necessary
  • The sealed exhibits then prepared should accompany the following documents-


      Forwarding Memo duly filled in -

    • Legible copy of the P.M. examination / injury report duly attested.
    • The firearm should be packaged in a cardboard box, envelope, or paper bag separately from the ammunition and / or magazine
    • The cartridges, cartridge cases, and / or bullets found at the crime scene should be packaged separately and placed in paper envelopes or small cardboard cases
    • Keep notes on the condition of the weapon as found and the steps taken to render it as safe as possible without damaging potential evidence.

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