Composite Carbon Fiber Barrels

Discussion in 'Main Message Board' started by snakepit, Sep 25, 2014.

  1. snakepit

    snakepit Gold $$ Contributor

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    Interesting video on Composite Carbon Fiber Barrels.

    http://www.military.com/video/forces/marine-corps/modern-day-marine-carbon-fiber-barrel/3804235483001/#.VCQcCpdxwDA.yahoomail
     
  2. Joe R

    Joe R Silver $$ Contributor

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    Very interesting, but I'm not sure they are focused on the competitive market. The longest barrel they have is a 28" and only in standard calibers. Weight is not an issue for me.
     
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  3. ARXV

    ARXV

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    I'd like to know more about how wrapping a barrel in carbon makes in shed heat better. I would think it would keep heat in. Carbon brakes are used in F1and MotoGP but they are amorphous carbon cooked in an autoclave for months, not a wrap of woven carbon fiber.
     
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  4. snakepit

    snakepit Gold $$ Contributor

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    That is a good question you asked and it had me wondering about that so I thought I would do a little research. I watched the video again and noticed that he never says that it sheds heat better but he says the Thermal Performance is better than steel and he mentioned Thermal Stress and no POI shift like a full steel barrel. I then Googled this topic and found another company's website that had good FAQ information about Carbon Fiber Barrels which included your thermal question.

    http://www.christensenarms.com/christensen-arms-customer-support/carbon-fiber-barrel-faqs/
     
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  5. jonbearman

    jonbearman I live in new york state,how unfortunate ! Gold $$ Contributor

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    Proof research really perfected these types of barrels but at 940.00 each they wont sell many to the average guy. We can buy almost 3 kreigers for one of theirs,it would be cool but way to much coin.
     
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  6. JamesnTN

    JamesnTN Silver $$ Contributor

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    Warning on carbon fiber wrapped barrels. Several years ago myself and a couple friends did some testing on these barrels and although I don't have the data any longer, bottom line is they trap heat within the barrel and cause the throats to erode 3-4x faster than non wrapped barrels. This is also dependent on type of cartridge being used. As we tested it on a 220 swift side by side with a HV SS barrel. Common sense is if you can't feel the heat generate out of the barrel them its trapped inside and only escape is out the bore. So each time you fire a round it generates heat and the more you shoot the more heat is produced. If the heat can't escape then it produces immature throat erosion.

    Working in the aircraft industry we have tested for many years the heat resistance of carbon fiber along with strength on all sorts of airplane parts. And bottom line here carbon is an insulator. Do a test get a small sheet of carbon fiber and some sheet metal attach the sheet metal to one side and apply a heat lamp on the sheet metal side and see how hot the metal gets and then see how hot the carbon fiber side is. Then time it and see how long it takes to cool down, then do same thing to just sheet metal alone and time how long it takes for it to cool down as well. You'll be amaze at how much difference there is.
     
  7. DT

    DT

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    Here is a gun of the week report on the Proof Research carbon wrapped barrels (which at the time were ABS barrels). Gives good rundown on barrel and data on heat dissipation. These are not sheet-wrapped barrels.

    Title: High tech hunter in 300WSM
    http://www.6mmbr.com/gunweek092.html
     
  8. butchlambert

    butchlambert Site $$ Sponsor

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    They may have a place somewhere, just not competition or hunting rifles. If you shoot offhand a little barrel weight keeps you from stirring the muzzle around. One of our BR Hall of Fame guys was furnished a few barrels. I saw and talked to him at the Super Shoot. He said they were best a .375 barrel. Maybe you know Bill Forrester.
     
  9. brians356

    brians356 Gold $$ Contributor

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    If I may revive an old thread (Yes, I may.):

    In the latest Shooting Times are two articles about rifles with Proof Research CF-wrapped barrels - a custom built PRS rifle, and a production Nosler Mountain Carbon Rifle.

    There's much prose on the positive attributes of the CF-wrapped barrels - light weight, heat dissipation, accuracy, etc. But having owned fly rods and golf club shafts made of carbon fiber, has anyone experienced or considered the effect of physical trauma - crushing, chipping, or abrasion - on the wrap's surface skin or fibers? With fly rods or golf clubs, once you damage the CF tube, even slightly (e.g. a small nick or scratch) it's likely to fail catastrophically under bending stress.

    In the case of a wrapped barrel, there's a steel core to support the tube, so it's not going to fail catastrophically. But it's not unlikely that damaging the wrap could upset the vibrational integrity of the barrel, or alter the uniformity of heat transfer. Too, once there's a breach in the wrap, moisture can enter. It seems that a proper repair would be needed to extend the viability of the barrel. How does one repair a damaged CF wrap, if it's even practical to try? It's akin to mending a crack in an eggshell in my mind.
    -
     
  10. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

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    You can shoot a proof or christensen barrel without the carbon on it so even if it did fail it wouldnt mattter
     
  11. brians356

    brians356 Gold $$ Contributor

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    Fair enough. But, would it shoot as well? And if so, why bother with the wrap to begin with?
    -
     
  12. Nature Boy

    Nature Boy Gold $$ Contributor

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    You get the stiffer characteristics of a heavier profile barrel without the weight.

    Bought my first Proof carbon barrel this year for a custom hunting rig. So far I’m liking it.

    Wouldn’t be what I would choose for a competition rifle. Too damn expensive to subject to the wear and tear those conditions impact on a barrel
     
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  13. Straightshooter1

    Straightshooter1 Gold $$ Contributor

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    I've really liked the carbon fiber application on things that I've had, like. . . fishing poles, golf clubs and car parts. And I seriously wanted a CF Proof barrel for my precision shooting here is AZ, but after taking a close look and doing some research, the heat issue just doesn't bode well for this kind of application. But . . . for a hunting rig I'd say it's a really good thing as you can have a stiffer, lighter barrel to haul around when hunting. . . and it looks pretty cool too. :cool:
     
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  14. brians356

    brians356 Gold $$ Contributor

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    Funny, my thinking was that clambering up and down mountains for days on end, in mountain weather, after a big ram would subject a rifle to much more wear and tear than competition.
    -
     
  15. Nature Boy

    Nature Boy Gold $$ Contributor

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    I agree

    [​IMG]

    [​IMG]
     
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  16. Nature Boy

    Nature Boy Gold $$ Contributor

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    I’m talking about internal wear
     
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  17. Straightshooter1

    Straightshooter1 Gold $$ Contributor

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    I think the wear and tear mentioned has to do with the inside of the barrel rather than the outside. . .??? Carbon fiber material is pretty doggone tough and shouldn't cause much concern for wear and tear on the outside.
     
  18. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

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    No i bet it would shoot terrible. It has a pretty small barrel inside
     
  19. PRR1957

    PRR1957

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    What concerns me with carbon fiber is how the epoxy that binds it holds up to high heat. There are high temperature resistant epoxies, but as I understand that the epoxy will eventually break down. If you look at modern F1, Indy, prototype race cars along with supercars were high is generated in the engine compartment especially the exhaust pluming, you will heat see reflecting/insulating fabrics attached to the carbon fiber bulkheads and inner body panels. If the heat reflecting/insulating material is not there the epoxy will break down and the carbon fiber will delaminate.

    In the case of a gun barrel, if delamination were to accrue especially the epoxy bond on the barrel steel liner, it could cause a barrel to burst. The steel liner is of a ultra light weight barrel contour and the carbon fiber wrap then brings it out to a bull barrel contour. If the rifle is set up as a Pdog rig, and one is shooting fast with long strings of shots this could be a problem, but at the cost of these barrels, I’m sure 99% of Pdog shooters would opt for a chrome moly or SS barrel at 1/3 the cost. Where I see the advantage is light weight mountain rifle as others hear had stated.
     
  20. Raythemanroe

    Raythemanroe Bullet Whisperer Silver $$ Contributor

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    They are pencil barrels with wrap that holds heat in but they are so damπ cool.


    Ray
     

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