Small Arms Terminology

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Across
  1. 1. Cartridge containing a pyrotechnic composition used to allow firers to 'see' their shots.
  2. 3. A series of three or more shots fired at the same aim point.
  3. 4. Speed of the projectile below the sound barrier.
  4. 5. The residue of burnt or unburnt propellant or metal from the projectile left inside the barrel after firing.
  5. 10. The name given to the assembly of the case, propellant and projectile when fitted together.
  6. 13. Disc used in shotgun shells to keep the powder contained within.
  7. 14. A notch cut in the bolt, firing pin or hammer in which a mating component engages to hold or restrict movement.
  8. 15. Area of the projectile where the shape changes from cylindrical to conical.
  9. 16. Failure of an explosive item to initiate when influenced, but the items does NOT have its own means of initiation.
  10. 18. Area of the projectile where the diameter is full calibre.
  11. 19. Part of the rifling that 'cuts' the projectile as it moves down the barrel thus imparting spin.
  12. 22. Low explosive used to generate gas pressure in a cartridge.
  13. 23. Part of the barrel where the projectile exits.
  14. 24. Impact point of a cartridge that is initiated by the firing pin, also knows as a percussion cap.
Down
  1. 2. Unintentional initiation of a cartridge caused by excessive heat in the chamber.
  2. 6. Expansion of the cartridge case in the chamber during firing.
  3. 7. The area of the barrel forward of the chamber but before the start of the rifling that allows the projectile to speed up prior to engaging in the rifling.
  4. 8. Outer metal component of a projectile that surrounds an inner core, to prevent barrel fouling.
  5. 9. The smallest internal diameter of a barrel, measured across the lands and expressed in mm or parts of an inch.
  6. 11. Study of projectiles in flight, their trajectory, impact force, penetration and energy.
  7. 12. The component usually associated or connected to the trigger that mates with a notch in the bolt, firing pin or hammer to hold or restrict movement.
  8. 17. A weapon design in which the magazine is to the rear of the trigger which is usually housed in the stock to allow greater barrel length.
  9. 19. Metal commonly used for projectiles or projectile cores.
  10. 20. Small spherical projectiles used in shotgun shells
  11. 21. The term given to a shotgun shell to identify the amount of lead balls contained within.