Bore

[bawr, bohr]

  • The inside surface of a firearm's barrel. British term for Gauge
  • The hollow portion of a barrel through which the bullet travels during it's acceleration phase.
  • A smooth-bore firearm is one that does not have rifling on the barrel's internal surface.
  • A big-bore firearm is one that fires a large caliber.
  • A small-bore firearm is one that fires a small caliber.