Lands and grooves refer to:

Lands and grooves refer to:

• A. The raised and recessed features in the bore that impart spin
• B. The bore diameter
• C. The length of the barrel
• D. The bullet weight

Answer: (A)

Lands and grooves describe the rifling inside the barrel—the raised areas (lands) and the recessed areas (grooves). As the bullet travels down the bore, the rifling twists it, imparting spin. That spin stabilizes the bullet gyroscopically, helping it fly more accurately and predictably. The term specifically refers to these internal rifling features, not the bore diameter, barrel length, or bullet weight, which are different aspects of the firearm and ammunition.

Lands and grooves describe the rifling inside the barrel—the raised areas (lands) and the recessed areas (grooves). As the bullet travels down the bore, the rifling twists it, imparting spin. That spin stabilizes the bullet gyroscopically, helping it fly more accurately and predictably. The term specifically refers to these internal rifling features, not the bore diameter, barrel length, or bullet weight, which are different aspects of the firearm and ammunition.