A smoothbore weapon is one that has a barrel without rifling. Smoothbores range from handheld firearms to powerful tank guns and large artillery mortars.

Which is better smooth bore or rifled?

The chief advantages of smoothbore designs are their greater suitability for fin stabilised ammunition and their greatly reduced barrel wear compared with rifled designs. ... Most modern main battle tanks now mount a smoothbore gun.

What is the difference between a rifled and a smooth bore?

What's the difference? A rifled barrel has lands and groves that cause the projectile to spin when it exists the muzzle (end of the barrel). A smooth bore is exactly how it sounds, smooth. A smooth bore has no lands and grooves.