Rifling twist is described by which attributes?

• A. Barrel length
• B. Firing pressure
• C. Number, size, and direction of twist present in lands and grooves
• D. Material of the barrel

Answer: (C)

Rifling twist is all about the spiral pattern inside the bore that grabs and spins the bullet. The description of that twist focuses on the rifling itself: how many lands and grooves there are, how wide they are (the size of the pattern in the bore), and which way the spiral runs (the direction of the twist). This combination—how many spirals, how large they are, and whether they twist clockwise or counterclockwise—defines the rate and handedness of the spin imparted to the bullet as it travels.

Barrel length, firing pressure, and the material of the barrel don’t describe the geometry of the rifling itself; they affect velocity, pressure, and durability, not the rifling’s twist pattern.