Terminology: Lands and Grooves

by
posted on April 3, 2013
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
wiley-clapp.jpg

Take a close look at your handgun barrel the next time you are cleaning it. Since we never clean loaded gun, it will have been carefully unloaded and the ammunition put away. As you check the bore to be sure you have done a proper job of removing the debris, take note of its spiral grooves. They weren’t always there.

These grooves were pressed, cut or hammered into place when the barrel was a smooth tube. This process is known as rifling the barrel and the end result is also called rifling, so the word is both a verb and a noun. Rifling induces a spinning motion to the bullet as it makes its speedy way down the barrel.

In the manufacturing process, the tool that creates the rifling puts (usually) five or six grooves into the smooth tube. The parts of the barrel that aren’t touched by the rifling tool are called lands. Therefore lands and grooves equal rifling, which spins projectiles and increases accuracy.

Latest

Customizing X Card Shotgun 1
Customizing X Card Shotgun 1

Building an X-Card Gun for Turkey Shoots

Unofficially known as a “turkey shoot,” X-Card competition challenges shotgunners to place shot pellets as closely as possible to the center of a target. And some makers have perfected a way to fine-tune shotguns for this purpose.

Spanish National Police Adopt Springfield Armory Echelon 4.0FC

The Spanish National Police (Policia Nacional) has officially adopted the Springfield Armory Echelon 4.0FC 9mm pistol as the issue pistol for its uniformed officers.

NRA Launches New NRA.org Platform and Official App to Modernize and Enhance the Member Experience

The National Rifle Association today launched its new NRA.org website and continued enhancements to the official NRA App, marking a major step and significant investment to modernize the organization and better serve members.

Political Report | Federal Firearms Rights Restoration is Officially Back

Criminal-justice reform has been distorted to mean counterproductive policies like eliminating cash bail or politicized district attorneys exhibiting a determined indifference to violence, but there is a place for sensible reforms that allow genuinely rehabilitated offenders to reintegrate into the community of law-abiding citizens.

Stable Fun: The Taurus Brace-Ready TX22

Taurus USA first adopted the ideal of a brace-ready format for a traditional handgun in its GX4 Strike Bravo, and now, the company is extending that concept to its TX22 rimfire handgun.

I Have This Old Gun: The Whitney Navy Revolver

One of the lesser-known revolvers from the Civil War era, the Whitney Navy revolver had several notable features and even inspired a copycat in the Confederacy.

Interests



Get the best of American Rifleman delivered to your inbox.