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13 Multiple choice questions

  1. the process of determining the distance between the firearm and a target, usually based on the distribution of powder patterns or the spread of a shot pattern
  2. an interior constriction placed at or near the muzzle end of a shotgun's barrel to control shot dispersion
  3. the chemical test used to develop patterns of gunpowder residues around bullet holes
  4. the diameter of the bore of a rifled firearm, usually expressed in hundredths of an inch or millimeters -- for example, .22 caliber and 9 mm
  5. a discipline mainly concerned with determining whether a bullet or cartridge was fired by a particular weapon
  6. the cut or low-lying portions between the lands in a rifled bore
  7. the mechanism in a firearm by which a cartridge or fired case is withdrawn from the chamber
  8. the raised portion between the grooves in a rifled boar
  9. the mechanism in a firearm by which a cartridge or fired case is withdrawn from the chamber
  10. the rear part of a firearm barrel
  11. the spiral grooves formedin the bore of a firearm barrel that impart spin to the projectile when it is fired
  12. size designation of a shotgun, originally the number of lead balls with the same diameter as the barrel that would make a pound; the only exception is the .410 shotgun, in which the bore size is 0.41 inch
  13. the interior of a firearm barrel