Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. [surface marking processes and techniques]

Anotations

Scope note:

The process of cutting spiral grooves in the surface of a firearm projectile or the bore of a firearm barrel, also for the system of grooves so cut. The grooves impart a spinning motion to the projectile, thus equalizing its balance in flight and stabilizing its trajectory.