Which statement best describes the purpose of rifling in a firearm?

• A. To reduce recoil
• B. To increase muzzle velocity
• C. To give the bullet spin to increase accuracy
• D. To simplify cleaning and maintenance

Answer: (C)

Imparting spin to the bullet is the essential purpose of rifling. The helical grooves in the bore grip the bullet as it exits and make it rotate around its long axis. This spin creates gyroscopic stability, so the bullet remains pointed in the same direction during flight instead of tumbling. That stability reduces yaw and wobble, leading to a straighter, more predictable trajectory, which directly translates to higher accuracy and better effective range.

Recoil reduction isn’t the goal—rifling doesn’t meaningfully change how much the gun kicks. Increasing muzzle velocity isn’t the primary purpose either; while friction from the rifling can slightly affect speed, the key reason for rifling is stabilizing spin. Cleaning and maintenance aren’t addressed by rifling itself, which is about how the bullet travels once fired.