from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A groove around the cylinder of a bullet.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Ringlike groove.
from the GNU version of the Collaborative International Dictionary of English
- n. A groove in any cylinder; specif., a groove 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. Also, a groove around the base of a cartridge, where the extractor takes hold.
from The Century Dictionary and Cyclopedia
- To form a groove or channel on: as, a cannelured bullet.
- n. A groove or channel on a decorative surface, as the channeling on Doric columns.
- n. A rectangular groove cut around the cylindrical part of a bullet to contain the lubricant, which consists generally of bayberry tallow or Japan wax.
Sometimes it takes a few good whack if the bullet has a good cannelure, but a design feature of a bullet puller is the assumption you want to save the brass.
My Remington 700 ADL 30-06, the 150 grain SST is set just above the cannelure (shorter than recommended OAL) and its shooting dime size groups.
The cartridge is identified by having no bullet, and by the cannelure in the neck of the case which is sealed by red lacquer.
I set the bullet out just below the cannelure and ran it across the chronographer (22 inch barrel at 3070fps) and didn’t see any noticeable change in velocity or pressure on the primer, so I remain setting it a bet deeper than the OAL calls for.