Barrels and Bullets: Conventional Versus Polygonal Rifling

[rmc51]

Barrels and Bullets: Conventional Versus Polygonal Rifling

The bore of a gun barrel with conventional rifling is etched with corkscrew-like cuts. Each cut, or groove, is separated by a ridge of metal called the land. Together, these grooves and lands define t...

bearingarms.com

Quote:
All conventional rifling is formed by cutting or exerting pressure within the barrel, unlike polygonal rifling which is formed by hammering the barrel from the outside.

 

[HooDoo Man]

Good article. Thanks for the post.

 

[dennishoddy]

I'm pretty sure the current coated bullets run just fine in the polygonal barrel's vs the pure lead bullets with wax rings.
Some of our shooters use the glocks. We have dug some of their bullets out of the berm to see how much is left of the coating and it always appears to be pretty much 100%.

 

[Charlie Byrd]

Took out my Walther Q5 match plastic after two years of not shooting and it was most excellent in accuracy, was very helped by its polygonal rifling.

 

[HooDoo Man]

I have a Kahr CW9 that was about $400 if i remember. I's a good gun for the $$$. The Kahr P9 is the Premium model of the gun with the Poly barrel for about $300 more. Wonder if it's worth the investment. Anyone familiar with the Kahr P9? THX.

 

[dennishoddy]

I have a Kahr CW9 that was about $400 if i remember. I's a good gun for the $$$. The Kahr P9 is the Premium model of the gun with the Poly barrel for about $300 more. Wonder if it's worth the investment. Anyone familiar with the Kahr P9? THX.

I have two Kahr CW-40's. They sport the rifled barrels though.

Kahr's are well known for maintaining tight tolerances during constructions which results in a very accurate pistol if the owner does his part.
They do require a break-in though. I trust my life with them.