Final answer:
True, rifling consists of spiral lands and grooves inside a firearm's bore that impart a spin to the projectile for improved stability and accuracy.
Step-by-step explanation:
The statement that rifling is found inside the bore and is made up of spiral lands and grooves is true. Rifling refers to the helical grooves cut or forged into the barrel of a firearm or cannon that impart a spin to the projectile when fired. This spin stabilizes the projectile, improving its aerodynamics and accuracy over distance. The raised areas between the grooves are known as lands, which make contact with the projectile and impart the spinning motion as it moves down the barrel.