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

man inspecting a cartridge with a magnifying glass
man inspecting a cartridge with a magnifying glass

The Drawbacks of Being a Numbers-Oriented Gun Guy

Like any hobby or pastime that is in any way even vaguely related to machines or technology, firearms attract a (possibly) disproportionate number of “right-brained,” STEM-oriented personalities who like numbers.

First Look: MDT Hand Cannon Slingshot

Slingshots are fun, but they can also be a legitimate backup defensive tool—in 2023, a 13-year-old Michigan boy saved his 8-year-old sister from being kidnapped by using a $3 slingshot to fire a marble and a rock at the assailant, striking him in the chest and head.

The LCP Meets Magpul: Ruger's LCP Max with Magpul's EHG

Over the years, Ruger has enhanced its LCP with the introduction of the LCP II and LCP Max. New for 2026, Ruger is offering a new version of the LCP Max with the addition of a Magpul Enhanced Handgun Grip.

Review: 945 Industries Q.A.P. Series Off-Body Carry Bag

Off-body carry can be somewhat controversial, but choosing the right gear can go a long way toward successful carry. One good option is the Q.A.P. Series of bags from 945 Industries.

At 75, CCI is Offering Even More

In 2026, CCI Ammunition—formally Cascade Cartridge, Inc.—marks its 75th anniversary with a fitting tribute to innovation and American ingenuity.

Gun of the Week: Powder River Precision Rubicon Icon

Powder River Precision has taken the basic Ruger 10/22 rifle concept and enhanced it with its Rubicon Icon design.

Interests



Get the best of American Rifleman delivered to your inbox.