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Questions on Rifling


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Old 08-08-2016, 04:13 PM   #1
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Default Questions on Rifling

Hello, I have a few questions regarding rifling; 1. Is there any significant performance differences between traditional and polygonal rifling? 2. If the gun barrel was not fixed, would the bullets flying through the barrels cause the barrels to spin from the rifling? and 3. How is rifling applied to a barrel?

Any info would be helpful :3
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Old 08-08-2016, 05:05 PM   #2
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Hello, I have a few questions regarding rifling; 1. Is there any significant performance differences between traditional and polygonal rifling? 2. If the gun barrel was not fixed, would the bullets flying through the barrels cause the barrels to spin from the rifling? and 3. How is rifling applied to a barrel?

Any info would be helpful :3
As far as cut rifling v polygonal, ask 10 experts and get 10 opinions.

Polygonal is easier and cheaper to mass produce, and produces excellent accuracy. cut rifling is more expensive, harder to produce on automated machinery, but IF DONE RIGHT can be a bit more accurate. (And the next 10 posts will disagree with one or more of these points)

There's also " button" or swaged rifling which can be both mass produced and accurate.

As far as how it's done, I don't have the energy to write the 12-15 pages to explain it. (google is your friend, here)
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Old 08-08-2016, 06:02 PM   #3
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polygonal rifling is not often encountered. If it was better many companies would be doing it that way.
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cause the barrels to spin from the rifling?
Yes but the barrels would weigh much more than the bullet so the barrel would be less likely to spin.
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3. How is rifling applied to a barrel?
Several ways.
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Old 08-08-2016, 06:34 PM   #4
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The why is obvious , an imperfect projectile spinning becomes , bla bla bla !
Does bring to mind some interesting questions though , pistol compared to rifle ?
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Old 08-08-2016, 07:04 PM   #5
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Everything you wanted to know about polygonals
(but were afraid to ask)

https://www.usconcealedcarry.com/barrels-and-bullets-conventional-versus-polygonal-rifling/
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Old 08-08-2016, 08:21 PM   #6
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I think they are often confused with the Whitworth Hexagonal barrels. Why are barrels for firearms called barrels any way? Think about that one? It may surprise you.
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Old 08-08-2016, 08:21 PM   #7
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The type of rifling makes no difference in your practical accuracy. I like polygonal rifling because it is easier to clean. And a clean, unleaded barrel is a better shooting barrel. In that sense there is a difference.
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Old 08-08-2016, 08:54 PM   #8
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I am no physicist, but this is what I think.

If the bullet had more mass than the rifle, and the rifle were not tied down, then the rifle would spin around the bullet.

There is a certain amount of torque applied to the rifle with the bullet spinning, but the effect is so small that it is not noticeable.
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Old 08-08-2016, 08:55 PM   #9
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As I said, ask 10 experts and........................
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Old 08-08-2016, 09:59 PM   #10
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As I said, ask 10 experts and........................
I agree. and ask ten people about properly breaking in a barrel, and you will get ten different opinions!
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