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Thread: Larry Vickers comments on chrome lined barrels vs nitrated barrels

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    Larry Vickers comments on chrome lined barrels vs nitrated barrels

    Quote Originally Posted by Larry Vickers View Post
    I think most everyone would agree chrome lining is superior with the possible exception of accuracy - major manufacturers like HK and FN still use it which is a clue

    Part of the push to methods other than chrome lining is due to environmental restrictions - the good old EPA

    Be safe

    LAV
    I thought it was the other way around that Nitrating processes was what caused enviormental concern, not chrome lining. I believe LWRC uses nitrated barrels.

    NiCorr™ surface conversion has proved more lubricious, harder wearing, more heat and corrosion resistant than the hard chrome normally used in the bore. Our barrels can handle 20,000 rounds before replacement, as compared to 6,000-10,000 rounds on a standard M4.-LWRC website
    We offer a variety of NiCorr treatments depending on the finish and corrosion resistance required. NiCorr-C leaves a hard, low microfinish, black corrosion resistant surface capable of resisting 360+ hours of accelerated salt spray as tested per ASTM B117. It competes favorably with Chrome and Electroless Nickel Plating. Plating is eliminated: saving cost of plating, transportation time. NiCorr is environmentally benign. -www.syracuseheattreating.com
    His claims don't appear to be true.

    "The salts used are highly toxic - Disposal of salts are controlled by stringent environmental laws in western countries and has increased the costs involved in using salt baths. This is one of the most significant reasons the process has fallen out of favor in recent decades."
    Last edited by ermac; 02-25-12 at 15:06.

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    You might want to clean this up. I have no idea who's quotes are who's.
    US Army 1966-69, VFW Life Member, Retired Geek

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    Not all nitriding involves salt baths.

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    I am NOT saying LV is wrong here but in my case I am skeptic of what anyone says on these threads. I have seen way too much mis-information posted on here even from the resident experts.

    I recall once seeing a posting, I believe being said about how all parts were built in house by a certain manufacturer, How their manufacturing and QC was all done in house. I know for a FACT that it was not true. I personally know where those particular parts were being subcontracted and know the very guy in lead of their production. So don't accept everything you read one these sites without due diligence.

    Probably one of the reasons I don't post much, prefer to read and ask questions to get topics started or of interest.
    JMHO

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    I believe what LAV was referring to is processes like Glocks tenifer which has a byproduct of cyanide IIRC. In the Advanced Armorers course Glock stated that US made slides/barrels have a different process which is essentially melonite without that byproduct. Nitro carburizing is what Glock calls the metal treatment done in the U.S. and is done without the large amounts of toxic haz-mat like tenifer.
    Chief Armorer for Elite Shooting Sports in Manassas VA
    Chief Armorer for Corp Arms (FFL 07-08/SOT 02)

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    Nevermind.....
    Last edited by Arctic1; 02-25-12 at 20:51.

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    Quote Originally Posted by Agent Law View Post
    Not all nitriding involves salt baths.
    Exactly, there are other ways of nitriding that are environmentally benign. What I've read suggests that salt bath nitriding generally produces the best surface properties however.

    Likewise, some forms of chrome plating are really nasty and others somewhat less so, and in any event it is possible (at expense) to keep things clean enough.

    This thread is begging for some Rsilvers comments as he seems to have some firsthand data on the topic.

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    From the little I know about meloniting barrels is that it's extremely hard. If small imperfections are in a barrels and aren't smoothed down early in the barrels life or hand lapped they be there forever. I'm thinking of having my new 18" BCM SS410 barrel melonited after 500 rounds. I find that with stainless barrels their very best accuracy is after 300 rounds or so but before 2K rounds depending on how the the barrel is shot.
    Chief Armorer for Elite Shooting Sports in Manassas VA
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    Quote Originally Posted by Robb Jensen View Post
    From the little I know about meloniting barrels is that it's extremely hard. If small imperfections are in a barrels and aren't smoothed down early in the barrels life or hand lapped they be there forever. I'm thinking of having my new 18" BCM SS410 barrel melonited after 500 rounds. I find that with stainless barrels their very best accuracy is after 300 rounds or so but before 2K rounds depending on how the the barrel is shot.
    So in your opinion, melonited barrels like those offered by s&w are superior to chrome lined and stainless barrels?

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    Quote Originally Posted by Koshinn View Post
    So in your opinion, melonited barrels like those offered by s&w are superior to chrome lined and stainless barrels?
    Some melonited barrels will shoot really well and some don't. If a melonited barrel doesn't shoot well nothing is going to make it shoot well. Good consistent hammer forged chrome lined barrels like FN pretty much ALL shoot very well. Stainless BCM SS410 barrels always shoot well but not as long as heavy chromed hammer forged barrels. Just my dos centavos. This is why I want to be sure my SS410 is shooting very well and THEN meloniting it....
    Chief Armorer for Elite Shooting Sports in Manassas VA
    Chief Armorer for Corp Arms (FFL 07-08/SOT 02)

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