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Thread: Cold Hammer Forged or not?

  1. #11
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    Good question...also is it the heat cycles or is it the friction caused by the bullet that causes a barrel to lose its life? Probably a combination of both?

  2. #12
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    CHF for me. And to be specific, a CHF DD lightweight (.625"approx) profile 14.5" mid-gas barrel.They should be out in the next 3 weeks.
    Last edited by Biggy; 08-02-10 at 15:37.

  3. #13
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    Quote Originally Posted by mrbieler View Post
    I've seen the 10~15k barrel life # tossed around.
    A fellow at Sabre Defence told me they expect their milspec chrome lined M4 barrels to run 35,000 rounds. And those are button rifled, not hammer forged.

    I wonder what the true barrel life is for a Noveske with a hammer forged barrel made from M249 barrel steel. 100,000 rounds? Should be the same for a Centurion barrel.

  4. #14
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    Quote Originally Posted by JSTICFRALL View Post
    Good question...also is it the heat cycles or is it the friction caused by the bullet that causes a barrel to lose its life? Probably a combination of both?
    A lot of barrels sustain more damage due to sloppy use of the cleaning rod than from bullets.

  5. #15
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    Quote Originally Posted by JSTICFRALL View Post
    Good question...also is it the heat cycles or is it the friction caused by the bullet that causes a barrel to lose its life? Probably a combination of both?
    High heat+high friction=accelerated wear.
    Jack Leuba
    Director, Military and Government Sales
    Knight's Armament Company
    jleuba@knightarmco.com

  6. #16
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    Filthy 14

    Quote Originally Posted by Boss Hogg View Post
    Wasn't Pat Rogers' "filthy" BCM a 16" hammer forged barrel that still shot MoA after 25,000+ rounds?

    As 500 gr mentioned, when you consider the additional cost in the total cost of the rifle, it's not that high, and if you can afford it, I'd say go for it.
    Ok, Filthy 14 is a standard BCM 16" middy non CHF. currently has approx 32,000 rounds through it. I don't know about the moa part.

    CHF is NOT necessary for most.
    Last edited by Grease Monkey; 08-02-10 at 21:33. Reason: added

  7. #17
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    Quote Originally Posted by JSTICFRALL View Post
    Good question...also is it the heat cycles or is it the friction caused by the bullet that causes a barrel to lose its life? Probably a combination of both?
    Hot gasses only. The chrome lining is far harder than the bullet jacket.

  8. #18
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    I'm not sure how a hammer forged barrel outlasts a standard barrel if they are both chrome lined. The heat and friction will eventually wear away the chrome lining, so isn't the hardness of the chrome the relevant component of barrel life?

    As the chrome is worn away the rifling has a less consistent contact with the bullet and you get a degradation is accuracy. The rifle with still work the groups just open up?

    I also don't understand how chrome lining that is twice as think (Noveske) would make a difference. If the rounds wear the chrome lining a measurement of X wouldn't both barrel standard chrome lined and double thickness chrome lined now have the same amount worn? They had to have the same interior dimensions to to start with and in both cases the bullet wears the same amount of chrome, so the interior diameter would be the same...

    Cameron
    Last edited by Cameron; 08-03-10 at 00:08.

  9. #19
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    I'm glad i got a CHF barrel. I dont shoot a lot either but it's good to know it will last a very long time and they can handle really high volume shooting.
    Personal security provided by: Sig Sauer, S&W, Ruger, and Daniel Defense

  10. #20
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    Quote Originally Posted by Cameron View Post
    I'm not sure how a hammer forged barrel outlasts a standard barrel if they are both chrome lined. The heat and friction will eventually wear away the chrome lining, so isn't the hardness of the chrome the relevant component of barrel life?

    As the chrome is worn away the rifling has a less consistent contact with the bullet and you get a degradation is accuracy. The rifle with still work the groups just open up?

    I also don't understand how chrome lining that is twice as think (Noveske) would make a difference. If the rounds wear the chrome lining a measurement of X wouldn't both barrel standard chrome lined and double thickness chrome lined now have the same amount worn? They had to have the same interior dimensions to to start with and in both cases the bullet wears the same amount of chrome, so the interior diameter would be the same...

    Cameron
    Well thought out and stated and I would really like to see this answered as well.

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