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“Twisted” octagon barrel

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https://forums.accuratereloading.com/eve/forums/a/tpc/f/7971019521/m/5281008262

16 November 2020, 06:31
pacecars
“Twisted” octagon barrel
Since we have barrels with twisted flutes would it be possible to make a “twisted” octagonal barrel? Might end up ugly as hell and I am sure the matching would be a pain and therefore very expensive but could it be done? Has it been done? Not planning on building one but just like to see what is possible
16 November 2020, 09:38
cdsx
quote:
Originally posted by pacecars:
Since we have barrels with twisted flutes would it be possible to make a “twisted” octagonal barrel? Might end up ugly as hell and I am sure the matching would be a pain and therefore very expensive but could it be done? Has it been done? Not planning on building one but just like to see what is possible



The same helical milling that produces "twisted" flutes could produce what you're suggesting, if you started with a blank that's thick enough.

And yes, it would be ugly as hell.
16 November 2020, 18:47
ColoradoMatt
I would like to see someone try it, as I’ve never heard of one. When I try to visualize it in my mind it seems geometrically impossible.


Matt
FISH!!

Heed the words of Winston Smith in Orwell's 1984:

"Every record has been destroyed or falsified, every book rewritten, every picture has been repainted, every statue and street building has been renamed, every date has been altered. And the process is continuing day by day and minute by minute. History has stopped. Nothing exists except an endless present in which the Party is always right."
16 November 2020, 19:08
ClaMar
All ideas are not necessarily good ideas...

Clarence
16 November 2020, 19:10
farbedo
You mean like this: http://www.kampfeldcustom.com/boltfluting0914_004.htm

I've seen bolts done with flats as well.

Jeremy
16 November 2020, 22:42
pacecars
His 6 sided “wrought iron” barrel is close to what I was thinking. Doesn’t look as bad as I thought it would
17 November 2020, 00:36
cdsx
quote:
Originally posted by pacecars:
His 6 sided “wrought iron” barrel is close to what I was thinking. Doesn’t look as bad as I thought it would



Those are actually shallow flutes rather than flats, but it's close enough to give you the idea. Same process, different cutter shape. Flutes serve some (limited) purpose, flats are primarily a matter of style, helical is a gaudy fad. And an expensive one.
17 November 2020, 00:47
cdsx
Oh, no.......

Please don't tell me you're contemplating this for your Brno project! 2020
17 November 2020, 00:51
Mike Scott
Some of it just seems silly but once you get started there is no end to the patterns you could cut.

https://matchgrademachine.com/fluting-options/
17 November 2020, 01:04
cdsx
quote:
Originally posted by Mike Scott:
Some of it just seems silly but once you get started there is no end to the patterns you could cut.

https://matchgrademachine.com/fluting-options/



barf

Forget about registering firearms; I'm starting to think we should be registering CNC machines to keep this garbage from proliferating.
17 November 2020, 03:41
jpl
I recall a "target" Ruger 10-22 barrel that had subtle, well-finished factory hammer forging contour. I thought it was pretty attractive. I think I've seen CZ 527 Lux/Royal with similar treatment before too.

Example:


Far less objectionable than MGM's treatments, and that wrought-iron pattern.
17 November 2020, 04:15
pacecars
quote:
Originally posted by cdsx:
Oh, no.......

Please don't tell me you're contemplating this for your Brno project! 2020


Nooooooooooooo way! Just wondering what can be done. Thinking out loud.
17 November 2020, 10:42
Peter Connan
quote:
Originally posted by farbedo:
You mean like this: http://www.kampfeldcustom.com/boltfluting0914_004.htm

I've seen bolts done with flats as well.

Jeremy


I actually think that with 8 sides instead of 6 and a longer "twist rate" this could look quite good.
Wonder if it could make any difference to barrel harmonics, similar to a "structured" barrel?
19 November 2020, 07:33
dougfinn
You gotta wonder if it would move in weird ways when it starts to heat up.
19 November 2020, 18:29
tom o
Looks like it would be easier to grip with cold or wet hands. Trying to look for the up side.
19 November 2020, 18:41
cdsx
quote:
Originally posted by tom o:
Looks like it would be easier to grip with cold or wet hands. Trying to look for the up side.



BUT WAIT - THERE'S MORE !!!!

With our optional barrel sleeve attachment, you can actually convert your rifle to a giant Yankee Screwdriver! (Bits sold separately.)
19 November 2020, 18:47
tom o
The yankee screwdriver thing is a really innovative "twist". Just shows what can be achieved by warped minds working together.
19 November 2020, 20:25
cdsx
Always happy to help. Big Grin
19 November 2020, 21:30
nopride2
No accounting for taste.

Dave
19 November 2020, 22:13
cdsx
quote:
Originally posted by nopride2:
No accounting for taste.

Dave



I'm not sure if Dave's commenting on our twisted humour, Tom, or twisted barrels....
21 November 2020, 16:57
Fal Grunt
I almost made a helical octagon a few years ago.

When I was shooting PRS with a friend I borrowed one of his rifles for the matches. These guys will F anything if they can hold it down. . . Flute it that is.

Long story short I had some rifle problems and threatened to build a Mauser. He of course quipped about it having an octagon barrel. I said absolutely to which he replied it would have to be “twisted”.

I really don’t think it would do anything weirder as it heated and expanded than some of the crazy decorative finishes guys put on rifles now.

If a barrel is fluted, I like the traditional old fashioned way of doing it. It’s not as if it is a new idea.


Nathaniel Myers
Myers Arms LLC
nathaniel@myersarms.com
www.myersarms.com
Follow us on Instagram and YouTube

I buy Mauser actions, parts, micrometers, tools, calipers, etc. Specifically looking for pre-WWII Mauser tools.
21 November 2020, 20:42
nopride2
quote:
I'm not sure if Dave's commenting on our twisted humour, Tom, or twisted barrels....

I don't think I will answer, might piss some people off. Ha-ha.

Dave
22 November 2020, 05:32
cdsx
quote:
Originally posted by nopride2:
quote:
I'm not sure if Dave's commenting on our twisted humour, Tom, or twisted barrels....

I don't think I will answer, might piss some people off. Ha-ha.

Dave



Ouch.
24 November 2020, 11:59
xausa
No one has raised the important question as to whether the external twist should mirror the internal twist or go in the opposite direction. In other words, if the rifling has a right hand twist, should the external twist be right hand as well? What about the twist rate? If the internal twist is 1:8, should the external twist be the same? Plenty of room for conjecture and experimentation.
24 November 2020, 17:09
tom o
Using a series of 3rd order, non-linear differential equations to approach this problem, it becomes clear that the rifling twist has to mirror the exterior twist.
If not, the conflicting forces could well cause a rift in the time / space continuum.
That would be a problem.
24 November 2020, 20:10
Todd Williams
Just go over to the Double Rifle sub-forum and look up OSR. According to the OSR believers, just fire a single Barnes bullet down your barrel and you'll get the same effect!

stir
24 November 2020, 20:12
cdsx
quote:
Originally posted by tom o:
Using a series of 3rd order, non-linear differential equations to approach this problem, it becomes clear that the rifling twist has to mirror the exterior twist.
If not, the conflicting forces could well cause a rift in the time / space continuum.
That would be a problem.



Oh look! Angels dancing on the head of a pin! Shouldn't we count how many? popcorn
04 December 2020, 20:15
Fjold
quote:
Originally posted by tom o:
Using a series of 3rd order, non-linear differential equations to approach this problem, it becomes clear that the rifling twist has to mirror the exterior twist.
If not, the conflicting forces could well cause a rift in the time / space continuum.
That would be a problem.


A 1:10" right hand twist rifled barrel with a 8" left hand twist exterior finish could open an interdimensional portal.


Frank



"I don't know what there is about buffalo that frightens me so.....He looks like he hates you personally. He looks like you owe him money."
- Robert Ruark, Horn of the Hunter, 1953

NRA Life, SAF Life, CRPA Life, DRSS lite

05 December 2020, 12:24
Michael Robinson
quote:
Originally posted by tom o:
Using a series of 3rd order, non-linear differential equations to approach this problem, it becomes clear that the rifling twist has to mirror the exterior twist.
If not, the conflicting forces could well cause a rift in the time / space continuum.
That would be a problem.


A guy shot one of these once and then tried to re-marry his ex-wife, but she wouldn't go for it.

She figured out he was only after his money.


Mike

Wilderness is my cathedral, and hunting is my prayer.
05 December 2020, 21:21
nopride2
quote:
A guy shot one of these once and then tried to re-marry his ex-wife, but she wouldn't go for it. She figured out he was only after his money.

Funny. Laughs are needed to keep ones sanity with this covid crap.

Dave
06 December 2020, 09:42
ForrestB
One practical concern...how would one inlet the stock?
So many stylistic concerns I won't get started.


______________________________
"Truth is the daughter of time."
Francis Bacon
06 December 2020, 21:51
nopride2
quote:
So many stylistic concerns I won't get started.

Insurmountable problems, give then to the gunsmith.

Dave
06 December 2020, 23:26
Herkimer
quote:
Originally posted by ForrestB:
One practical concern...how would one inlet the stock?
So many stylistic concerns I won't get started.



No problem! You'd just cast the plastic stock in situ with the barrel. Because the sort of people who would want a candy-cane barrel would NEVER consider a walnut stock.
07 December 2020, 02:35
Atkinson
I thought about a fluted barrel, that way I could shave every morning in elk camp..Ive cut my finger on a fluted barrel. Not for me as they serve no real purpose, other than in the mind of a mindless beholder.. rotflmo


Ray Atkinson
Atkinson Hunting Adventures
10 Ward Lane,
Filer, Idaho, 83328
208-731-4120

rayatkinsonhunting@gmail.com
07 December 2020, 22:09
Herkimer
quote:
Originally posted by Atkinson:
I thought about a fluted barrel, that way I could shave every morning in elk camp..Ive cut my finger on a fluted barrel. Not for me as they serve no real purpose, other than in the mind of a mindless beholder.. rotflmo



Good point, Ray. Just what every recoiling rifle needs - more sharp edges!

Smiler
09 December 2020, 20:24
nopride2
The only sharp edges should be on cutting tools.

Dave