Yes, firearms typically have grooves within the barrel, which are part of a rifled barrel. These grooves help impart spin to the bullet as it travels down the barrel, improving accuracy and stability during flight.
When it comes to using a PVC (polyvinyl chloride) barrel for target practice with ball bearings, rifling is not necessary and could actually complicate things. PVC is a common material used in air guns or spud guns, where the


