cannelure

Noun

Meaning

cannelure (plural cannelures)

(firearms) A ringlike groove, such as that around the cylinder of an elongated bullet for small arms to contain a lubricant, or around the rotating band of a gun projectile to lessen the resistance offered to the rifling.

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Examples

Also during the stage, Black Hills wanted the bullet to be given a cannelure, which had been previously rejected for fear it would affect accuracy. Source: Internet

However, at impact velocities above roughly convert, it may yaw and then fragment at the cannelure (the crimping groove around the cylinder of the bullet). Source: Internet

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