Imparting spin to projectiles with out fletching is a way used to stabilize and enhance the accuracy of projectiles. Fletching, the method of attaching feathers or vanes to the projectile, is historically used to induce spin and keep stability throughout flight. Nonetheless, there are various strategies to realize spin with out the usage of fletching.
One technique includes the usage of rifling, a sequence of spiral grooves minimize into the bore of a firearm barrel. Because the projectile travels by means of the barrel, it engages with the rifling, imparting a spin that stabilizes its flight. This precept is often employed in firearms and artillery.