Do spiral flutes really affect anything?

KPK

Sergeant
Full Member
Minuteman
Mar 2, 2009
1,092
152
37
Oklahoma
I'm kind of digging spiral flutes for some reason. Do u guys think they really affect anything?
 

Chiller

Moderator
Moderator
Full Member
Minuteman
  • Dec 18, 2008
    6,136
    40
    52
    Sole resident of Mt. Crumpit.
    Re: Do spiral flutes really affect anything?

    The only argument I can see is the “possible” additional surface area for heat transfer. Other than that.....Cosmetic
     

    MrOneEyedBoh

    Sergeant
    Full Member
    Minuteman
    Nov 23, 2011
    546
    7
    34
    Maryland, USA!
    Re: Do spiral flutes really affect anything?

    They are cool looking but thats about it. Slight reduction in weight ( not much ) and slightly better heat transfer due to the more surface area. But also, some manufacturers are against it and can void warranty as it can inherently weaken the barrel, or so said.
     

    Cigarcop

    Sergeant
    Full Member
    Minuteman
    Aug 9, 2009
    830
    8
    58
    Pottstown, Pa
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MrOneEyedBoh</div><div class="ubbcode-body">They are cool looking but thats about it. Slight reduction in weight ( not much ) and slightly better heat transfer due to the more surface area. But also, some manufacturers are against it and can void warranty as it can inherently weaken the barrel, or so said. </div></div>

    How many barrels do u think go back for warranty service?? LOL
     

    AXEMAN

    General Nuisance
    Full Member
    Minuteman
    Sep 17, 2009
    5,039
    2
    kansas, topeka
    Re: Do spiral flutes really affect anything?

    they kinda give me a semi if that counts. looks pretty cool and there are some new non traditional barrel treatments that look nice. im just afraid to do it and change a good shooting barrel
     

    MrOneEyedBoh

    Sergeant
    Full Member
    Minuteman
    Nov 23, 2011
    546
    7
    34
    Maryland, USA!
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Cigarcop</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MrOneEyedBoh</div><div class="ubbcode-body">They are cool looking but thats about it. Slight reduction in weight ( not much ) and slightly better heat transfer due to the more surface area. But also, some manufacturers are against it and can void warranty as it can inherently weaken the barrel, or so said. </div></div>

    How many barrels do u think go back for warranty service?? LOL </div></div>

    funny eh? yeah well most likely none. but if there is a problem with it, it could be denied. I'm just regurgitating what I've read on here.
     

    19Scout77

    Gunny Sergeant
    Full Member
    Minuteman
    Jun 9, 2007
    3,981
    562
    GA
    Re: Do spiral flutes really affect anything?

    Spiral flutes are longer than straight flutes and therefore...in theory...result in a greater weight reduction. In practice... they have a higher CDI factor.
     

    2 dogs

    Sergeant
    Full Member
    Minuteman
    Sep 13, 2005
    258
    2
    Texas
    Re: Do spiral flutes really affect anything?

    They make mine harder than chicken lips!!
     

    Lowe Left

    Chief
    Full Member
    Minuteman
    Apr 3, 2009
    891
    4
    Arizona
    Re: Do spiral flutes really affect anything?

    They double, no triple the awesomeness of your "plain" barrel. But, they have been a hinderance to accuracy. I can't help but to continue to stare at them with my left eye while attempting to get a good sight picture with my right eye. Awesome.

    Seriously, asthetics, adding surface area for cooling and weight reduction seem to be the benefits.
     

    armorpl8chikn

    Colonel Angus
    Full Member
    Minuteman
    Aug 17, 2010
    6,934
    16,483
    52
    Face Slapping Distance
    Re: Do spiral flutes really affect anything?

    If they are in the oposite direction of rifling then they will give a 70% increase in accuracy all the time in 50% of the barrels tested.
     

    trevor300wsm

    Team Pantydropper
    Full Member
    Minuteman
    Nov 8, 2009
    2,480
    176
    41
    Oklahoma
    Re: Do spiral flutes really affect anything?

    I only own one rifle that has spiral flutes. Im very happy with it and I can't imagine that accurancy has been affected from the fluting. The rifle shoots far above my standards. I think it adds alot of cosmetic appeal to the rifle and if you don't plan to keep it forever, it will usually help with the resale value.
     

    hiddenmongoose

    crazysection
    Full Member
    Minuteman
    Oct 30, 2009
    564
    117
    38
    Ireland
    Re: Do spiral flutes really affect anything?

    you should not drink spin d when firing any rifle with spiral fluting. Recent studies in oxford have shown that if you do the chances of shooting yourself in the back increases 175.3% due to the boomerangiolous effect
     

    shoot4fun

    Gunny Sergeant
    Full Member
    Minuteman
  • Oct 27, 2003
    4,384
    727
    Riverside, Alabama, USA, etc
    Re: Do spiral flutes really affect anything?

    I have one bolt that was spiral fluted. It is from a M2008 action and those are big bolts. I do think it helped smooth it up by taking a little bit of friction causing contact away.
    As for spiral fluted barrels, I don't see what you guys see in them.
     

    Wild_Bill

    Gunny Sergeant
    Full Member
    Minuteman
    Oct 22, 2007
    1,055
    7
    50
    Victoria Australia
    Re: Do spiral flutes really affect anything?

    Hi if you want a spiral fluted barrel got a Rock Creek they get Campfield Customs to do the fluting and the finish is amasing it is better than most can achieve with straight fluting.

    The benifites are the fluted remove more weight than straight fluting because they are longer than straight fluting and also they are slightly deeper.

    As for accuracy we are fitting them on Palma barrels 34" long aswell as straight taper barrels in 223, 6mm, 7mm and 30cals. they are all amasing as regards to accuracy and as it is an option from Rock creek their is no problem with warrenty.

    If you get any barrel manufacturers barrel fluted after it leaves their shop you will no longer have warenty as they do the final lapping after the fluting this is nothing to do with spiral fluting.

    Geoff Grenfell used a 12.4 twist spiral fluted Rock Creek barrel 34" long to come 5th in the Long Range Full Bore world Championships and he had the most centres out of any shooter on the range.

    Bottom line get the fluting from the company that supplies the barrel and you wil be good to go and i reccomend Rock Creek with their cut rifled barrels they just shoot.

     

    Brutas

    Sergeant
    Full Member
    Minuteman
    Nov 5, 2009
    124
    0
    Re: Do spiral flutes really affect anything?

    ER Shaw claims to have a patent on spiral fluting and has threatened lawsuits against many barrel manufacturers.

    (I know, I know, how do you patent that..., It is the threat of the lawsuit and the cost of defending it. Lawyers!).

    Done properly on a good barrel blank, should have no negative effects. Fluting is mostly for appearance anyways.
     

    HPLLC

    Sergeant
    Full Member
    Minuteman
    Jun 17, 2009
    89
    3
    38
    Wales WI
    www.griffinarmament.com
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Brutas</div><div class="ubbcode-body">ER Shaw claims to have a patent on spiral fluting and has threatened lawsuits against many barrel manufacturers.

    (I know, I know, how do you patent that..., It is the threat of the lawsuit and the cost of defending it. Lawyers!).

    Done properly on a good barrel blank, should have no negative effects. Fluting is mostly for appearance anyways. </div></div>

    If they have a patent and were the first to do it, they probably have a valid patent.

    I believe KAC has a patent for dimpling a barrel. It's probably a valid patent.

    It's on someone else to put the argument together to cover their ass if they want to do the same. If they have proof someone did it before the patent was submitted then they have a good argument for an invalid patent.
     

    Shortdraw

    Alaskan Guide
    Full Member
    Minuteman
    Aug 14, 2010
    1,452
    14
    45
    Kodiak, Alaska
    Re: Do spiral flutes really affect anything?

    They look damn good if that is the look you are after.
    sgtisg.jpg
     

    I Am Hero

    Sergeant
    Full Member
    Minuteman
    Nov 29, 2011
    780
    1
    30
    Grand Rapids, MI
    Re: Do spiral flutes really affect anything?

    There are so many different types of fluting that they are experimenting with these days. I would have to agree that it is more cosmetic.
     

    creids98292

    Sergeant
    Full Member
    Minuteman
    Dec 11, 2011
    230
    1
    42
    Stanwood, wa
    Re: Do spiral flutes really affect anything?

    We haven't found they affect anything negatively, but if your doing it for weight reduction go with wide, deep straight flutes.
     

    KPK

    Sergeant
    Full Member
    Minuteman
    Mar 2, 2009
    1,092
    152
    37
    Oklahoma
    Re: Do spiral flutes really affect anything?

    Wow this got a lot of hits!! Thanks for the info fellas.

    I'll just have to decide what I want. Sounds like they are good to some and not to others.

    Anyone have pics of deep wide flutes?
     

    KPK

    Sergeant
    Full Member
    Minuteman
    Mar 2, 2009
    1,092
    152
    37
    Oklahoma
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: deadlift</div><div class="ubbcode-body">We haven't found they affect anything negatively, but if your doing it for weight reduction go with wide, deep straight flutes. </div></div>

    Why do you say straight flutes? Will that remove more steel?
     

    AlliedMarine

    Private
    Full Member
    Minuteman
    Nov 10, 2011
    40
    0
    40
    Grand Lake OK
    Re: Do spiral flutes really affect anything?

    i wonder about the harmonics. ive heard about free floated barrels and points of contact on those barrels could change the harmonics of the energy or the velocity of the bullet, could spiraling with or spiraling against the rifling, as they where talking above, be affected? i am no machinist or scientist, but it is something i could see as possible

    or am i way over thinking this
     

    DP425

    I’d rather be sleeping
    Full Member
    Minuteman
    Feb 28, 2009
    3,245
    64
    MI
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Brutas</div><div class="ubbcode-body">ER Shaw claims to have a patent on spiral fluting and has threatened lawsuits against many barrel manufacturers.

    (I know, I know, how do you patent that..., It is the threat of the lawsuit and the cost of defending it. Lawyers!).

    Done properly on a good barrel blank, should have no negative effects. Fluting is mostly for appearance anyways. </div></div>


    Since a patent isn't as simple as "I invented spiral fluting", it's not as clear cut as some may think. Patent's require specific's, such as dimensions, rate of twist, shape of flute, so on and so fourth. If just one part of it is changed, the patent does not provide protection.

    So, I doubt I'd worry to much on patent law being a factor.
     

    nexusfire

    Secks fi millimeet
    Full Member
    Minuteman
    Sep 9, 2010
    1,870
    416
    49
    Mesa, AZ
    Re: Do spiral flutes really affect anything?

    yes they harness the power of unicorns and make you an uber sniper
     

    300sniper

    Gunny Sergeant
    Full Member
    Minuteman
    Jan 17, 2005
    3,438
    17
    Greenwood, Ca
    Re: Do spiral flutes really affect anything?

    i bet an engineer could do some quick math and determine that a spiral fluted barrel is less rigid than a straight fluted barrel of the same contour. enough to make a difference on target? doubtful.
     

    John_in_WYO

    Colorful Raconteur
    Full Member
    Minuteman
    Apr 12, 2009
    392
    249
    Cody, WY
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 2 dogs</div><div class="ubbcode-body">They make mine harder than chicken lips!! </div></div>

    Those aren't hard.

    You mean: "So hard a cat can't scratch it!"

    Texicans, I swear....
    grin.gif
     

    CrazyDonkey

    Sergeant
    Full Member
    Minuteman
    Sep 6, 2007
    888
    0
    Arizona
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lowe Left</div><div class="ubbcode-body">They double, no triple the awesomeness of your "plain" barrel. But, they have been a hinderance to accuracy. I can't help but to continue to stare at them with my left eye while attempting to get a good sight picture with my right eye. Awesome.

    Seriously, asthetics, adding surface area for cooling and weight reduction seem to be the benefits. </div></div> Please show proof that was obtained through testing that shows they hinder accuracy.
     

    Strangedays

    Gunny Sergeant
    Full Member
    Minuteman
  • Feb 27, 2009
    1,838
    167
    37
    Tacoma Washington
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RobG</div><div class="ubbcode-body">Affects the wallet for sure
    laugh.gif
    </div></div>
    But they look sweet and if you have the cash and thats what you want then why not?
     

    Elvis

    Sergeant
    Full Member
    Minuteman
    Dec 25, 2003
    104
    0
    Duluth MN
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: CrazyDonkey</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lowe Left</div><div class="ubbcode-body">They double, no triple the awesomeness of your "plain" barrel. But, they have been a hinderance to accuracy. I can't help but to continue to stare at them with my left eye while attempting to get a good sight picture with my right eye. Awesome.

    Seriously, asthetics, adding surface area for cooling and weight reduction seem to be the benefits. </div></div> Please show proof that was obtained through testing that shows they hinder accuracy. </div></div>

    The internet really needs a sarcasm font. He explained that it hindered accuracy because he "can't help but to continue to stare at them" while "attempting to get a good sight picture".

    Or you were being sarcastic and I didn't pick up on it, in which case, the internet really needs a sarcasm font.
     

    SniperCJ

    Sky God
    Commercial Supporter
    Full Member
    Minuteman
    Nov 2, 2001
    1,147
    2
    Dallas,TX
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KPK</div><div class="ubbcode-body">I'm kind of digging spiral flutes for some reason. Do u guys think they really affect anything? </div></div>

    Of course...CDI factor!
     

    Scotty22

    Sergeant
    Full Member
    Minuteman
    Jan 20, 2009
    421
    3
    34
    Katy, Texas USA
    Re: Do spiral flutes really affect anything?

    I have my 6mm-284 barrel spiral fluted. It's a heavier barrel it finishes at .940 at the muzzle and it still shoots 1/4moa all day long.
     

    Lowe Left

    Chief
    Full Member
    Minuteman
    Apr 3, 2009
    891
    4
    Arizona
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Scotty22</div><div class="ubbcode-body"> it still shoots 1/4moa all day long. </div></div>

    I'll give you a million dollars for it. All day long? Any day? Rapid fire? wow....
     

    Scotty22

    Sergeant
    Full Member
    Minuteman
    Jan 20, 2009
    421
    3
    34
    Katy, Texas USA
    Re: Do spiral flutes really affect anything?

    For a million dollars you can have it. And no all day long was used as a figure of speech.
     

    AzNooB

    Sergeant
    Full Member
    Minuteman
    Apr 28, 2010
    123
    0
    32
    Dallas, TX
    Re: Do spiral flutes really affect anything?

    If you read Shilen's FAQ, they say flutes are not beneficial.

    <div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Fluting is a service we neither offer nor recommend. If you have a Shilen barrel fluted, the warranty is void. Fluting a barrel can induce unrecoverable stresses that will encourage warping when heated and can also swell the bore dimensions, causing loose spots in the bore. A solid (un-fluted) barrel is more rigid than a fluted barrel of equal diameter. A fluted barrel is more rigid than a solid barrel of equal weight. All rifle barrels flex when fired. Accuracy requires that they simply flex the same and return the same each time they are fired, hence the requirement for a pillar bedded action and free floating barrel. The unrecoverable stresses that fluting can induce will cause the barrel to flex differently or not return from the flexing without cooling down a major amount. This is usually longer than a shooter has to wait for the next shot. The claim of the flutes helping to wick heat away faster is true, but the benefit of the flutes is not recognizable in this regard until the barrel is already too hot. </div></div>
     

    Lowe Left

    Chief
    Full Member
    Minuteman
    Apr 3, 2009
    891
    4
    Arizona
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Scotty22</div><div class="ubbcode-body">For a million dollars you can have it. And no all day long was used as a figure of speech. </div></div>

    lol - I had to call you out on that one. Nice shooting rifle I'm sure.
     

    Tomekeuro85

    Sergeant
    Commercial Supporter
    Full Member
    Minuteman
    Oct 11, 2007
    592
    1
    36
    Chicago Suburbs, IL
    Re: Do spiral flutes really affect anything?

    You have to make sure the spiraled flutes go in the same direction as the rifling. If the flutes go counterclockwise and the rifling is clockwise the flutes will slow down the spin of the bullet.

    I heard a guy at the local gun shop talkin about it so it must be true.
     

    AzNooB

    Sergeant
    Full Member
    Minuteman
    Apr 28, 2010
    123
    0
    32
    Dallas, TX
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Tomekeuro85</div><div class="ubbcode-body">You have to make sure the spiraled flutes go in the same direction as the rifling. If the flutes go counterclockwise and the rifling is clockwise the flutes will slow down the spin of the bullet.

    I heard a guy at the local gun shop talkin about it so it must be true.</div></div>

    Haha at first I thought you were serious. What unit did he serve with? 10th Force Seal-Con Team 9 Ranger Jumpers?
     

    Glen Seekins

    Gunny Sergeant
    Commercial Supporter
    Full Member
    Minuteman
    Jan 28, 2004
    1,290
    31
    lewiston, ID
    www.seekinsprecision.com
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 300sniper</div><div class="ubbcode-body">i bet an engineer could do some quick math and determine that a spiral fluted barrel is less rigid than a straight fluted barrel of the same contour. enough to make a difference on target? doubtful. </div></div>

    No math needed, spiral flutes remove more material than strait flutes. You cannot remove material and make something more rigid. You can change the way it flexes or moves under stress but thats about it.... i think
    smile.gif


    surface area is not enough to matter. If you want surface area to increase media blast the barrel and it will increase exponentially

    We have a few spiral fluted barrels and they shoot just as well as they did before we fluted them. I have never seen fluting of any sort change anything but the weight and looks.
     

    was21

    Sergeant
    Full Member
    Minuteman
    Jul 1, 2004
    285
    0
    Mesa AZ USA Earth
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KPK</div><div class="ubbcode-body">I'm kind of digging spiral flutes for some reason. Do u guys think they really affect anything? </div></div>

    yep...your pocketbook!
     

    sticshooter

    Sergeant
    Full Member
    Minuteman
    Apr 5, 2010
    343
    3
    50
    evansville,in u.s.a
    Re: Do spiral flutes really affect anything?

    i rate spiral fluteing right up there with petacures and manacures,extremely"GAY".INMHO,but i also know there's people on here that have more money than time so spend it as you see fit.what ever drops your tailgate.
     

    Shortdraw

    Alaskan Guide
    Full Member
    Minuteman
    Aug 14, 2010
    1,452
    14
    45
    Kodiak, Alaska
    Re: Do spiral flutes really affect anything?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: johnnyDL</div><div class="ubbcode-body">i rate spiral fluteing right up there with petacures and manacures,extremely"GAY".INMHO,but i also know there's people on here that have more money than time so spend it as you see fit.what ever drops your tailgate. </div></div>
    I suppose putting nice wheels on your car is "gay" too, wearing nice clothes, brushing your teeth and combing your hair must also be gay too... I don't see anything wrong with having a nice looking rifle but I'm kind of gay like that.