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Smooth and highly polished rifle or shotgun bore in to obtain the best shooting results.
Although no one called it a "shotgun" in the Old West, this expression has its roots there. The person who would sit next to the carriage driver and carry a gun, typically a shotgun, was frequently brought along. These co-pilots served as bodyguards, shooing away any thieves or miscreants who tried to obstruct them.
A shotgun is a long-barreled firearm with a straight-walled cartridge known as a shotshell that typically discharges a number of small, sphere-shaped projectiles known as a shot or, less frequently, a single solid projectile known as a slug. Shotguns are also referred to as scatterguns or, historically, fowling pieces.
Although rifled barrels for shooting slugs (sometimes known as "slug barrels") are also available, shotguns are typically smoothbore weapons, meaning that their gun barrels have no rifling on the inner wall.
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