cannelure(redirected from cannelures)
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A groove in a bullet which contains a lubricant, or into which the cartridge is crimped.
A groove in a cartridge case providing a purchase for the extractor.
A ringlike groove for locking the jacket of an armor-piercing bullet to the core.
A ringlike groove in the rotating band of a gun projectile to lessen the resistance offered to the gun rifling and to prevent fringing grooves.