The design feature that causes a bullet to spiral, which increases accuracy and distance, is called _______.

The design feature that causes a bullet to spiral, enhancing both accuracy and distance, is known as rifling. This process involves creating helical grooves inside the barrel of a firearm. When the bullet is fired, these grooves grip the bullet and impart a stabilizing spin as it travels down the barrel. This spin stabilizes the bullet in flight, much like how a thrown football spirals through the air, allowing for improved accuracy by minimizing the effects of wind and other environmental factors. Rifling is a fundamental aspect of firearm design that enables shooters to achieve greater precision over longer distances, making it essential for effective marksmanship. Understanding this feature is crucial for any hunter or shooter, as it directly impacts performance and accuracy in the field.