Rifle

If a gun barrel is outfitted with spiral grooves ("rifled"), the bullet will spin around its axis and aim better, but this requires better gun construction. The new Pennsylvania rifle took twice as long to reload but had triple the range.
 America 1710 Rifle

If a gun barrel is outfitted with spiral grooves ("rifled"), the bullet will spin around its axis and aim better, but this requires better gun construction. The new Pennsylvania rifle took twice as long to reload but had triple the range.