rifling


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rifling

[′rīf·liŋ]
(mechanical engineering)
The technique of cutting helical grooves inside a rifle barrel to impart a spinning motion to a projectile around its long axis.
References in periodicals archive ?
And while its length places the bullet of a chambered cartridge closer to the rifling than in a sporting chamber, it is not engaged by the rifling as in a match chamber.
CAPACITY 10+1, Al-style magazines BARREL 26 in., 10:1 twist, 5R rifling OVERALL LENGTH 47.5 in.
The rifling cutter box had to be rotated as it was drawn through the barrel's bore in order to cause the grooves to spiral around the circumference.
If you look across the muzzle in a good light, you can see the ends of the rifling lands (the raised portion).
For lack of a better term, shadows of the rifling were seen in the reflected light.
The rifle has seen heavy use even to the point that its rifling grooves are dark.
The bore-scope showed the fine-cut rifling that pre-'64s are known for, with traces of very light pitting.
In their six grooves, Colerain barrels feature round bottom rifling that holds less fowling; square bottomed grooves reportedly retain more fowling.
HERE IS A BRIEF LOOK AT RIFLING MET HODS, BOTH SPACE-AGE AND CENTURIES OLD.
A tightly patched cleaning jag rotates the ramrod almost a half turn as the patch follows the rifling the length of the barrel, indicating a rate of twist, around one turn in 66 inches.