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The diameter of SG pellet in 12 bore gun cartridge is

  • A.8.43 mm
  • B.7.77 mm
  • C.6.83 mm
  • D.5.16 mm

Answer: A

The diameter of an SG pellet in a 12 bore cartridge is 8.43 mm. SG stands for 'small game' in the old buckshot sizes, and SG is the largest of the common buckshot pellets, about 0.33 inch.

7.77 mm, 6.83 mm and 5.16 mm are smaller sizes, so they would correspond to other, smaller shots than SG. The figure matters in forensic work because pellets recovered from a body or the scene can be measured with a micrometer, and a diameter near 8.4 mm points towards buckshot of the SG type fired from a 12 bore gun, instead of the small shot used for birds.

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