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Thread: S&W Melonite coated barrel vs Noveske chrome lined barrel.

  1. #161
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    Most of the companies know nitriding is better. It will take more years for that knowledge to trickle down to consumers. Let's see if there is even one company who submits chrome barrels to the IC competition.

  2. #162
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    Quote Originally Posted by m4brian View Post
    - Seems that for all those "bubbas" who want a cheap AR, the Sport IS the way to go, and I applaud S&W for putting MORE carbines in the hands of citizens.
    Not sure how you define "bubbas," but when I've seen the term used in a disparaging fashion it usually connotes a ignorant or uninformed individual who acts on personal bias or prejudice rather than reasoned analysis.

    Most of the proponents of nitro carburizing who have responded to this thread are engineering types or individuals who have done independent research into the process and are attempting to make an informed decision. Many of the opponents seem to base their opposition on a slavish devotion to a 40+ year old military specification.

    This thread has elicited a lot of information on the relative advantages of chrome lining and nitro carburizing. I hope that even the "bubbas" out there will consider the information in this thread, do their own research and make an informed decision, rather than succumbing to the "milspec" bias that seems to permeate the traditional AR crowd.

  3. #163
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    Quote Originally Posted by Dirtyboy333 View Post
    Ok??? im not sure if your agreeing or disagreeing. Of course safety is always a concern and proper testing should be applied. I'm just saying that i cannot imagine these barrels that are made by the big companies being unsafe. Its not a new technology.
    Neither. I'm mainly concerned that people or small custom type builders will send a barrel to some nitride shop without testing the effect on the barrel extension. It may be safe or it might cause failure. I'm not concerned about a Sig barrel.

  4. #164
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    I agree with your statement, Todd, as there does appear to be a right way to do things. In regards to my barrel that was nitrided, I feel confident with the research that my guy did in speaking to Rock Creek and in utilizing a nitriding company that has experience in nitriding weapon barrels.

  5. #165
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    The concern for the barrel extension on barrels being sent to be nitrided, is that thermal expansion could cause the extension to loosen according to this thread-
    http://www.usrifleteams.com/forums/i...1&#entry156992

    If the information in the above is accurate, barrel extensions are made from 4140 steel.

    I have found, after some research, some treatment methods are better for barrels than others and temperatures used during application varies with the method
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  6. #166
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    Quote Originally Posted by Todd.K View Post
    Neither. I'm mainly concerned that people or small custom type builders will send a barrel to some nitride shop without testing the effect on the barrel extension. It may be safe or it might cause failure. I'm not concerned about a Sig barrel.
    Yeah, I totally agree and I wouldn't want a small shop with little to no experience (nitriding) to treat my barrel & extension considering it can present a potential hazard without the proper R&D and processes.
    Last edited by Dirtyboy333; 07-09-11 at 18:38.

  7. #167
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    Quote Originally Posted by MistWolf View Post
    The concern for the barrel extension on barrels being sent to be nitrided, is that thermal expansion could cause the extension to loosen according to this thread-
    http://www.usrifleteams.com/forums/i...1&#entry156992
    You have to be signed in to view the thread.

    Also, I thought barrel extensions are pinned on and cannot loosen up?
    Last edited by EzGoingKev; 07-09-11 at 19:51.

  8. #168
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    Quote Originally Posted by EzGoingKev View Post
    You have to be signed in to view the thread.

    Also, I thought barrel extensions are pinned on and cannot loosen up?
    Barrel extensions are NOT pinned...

  9. #169
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    Post

    Quote Originally Posted by Todd.K View Post
    Neither. I'm mainly concerned that people or small custom type builders will send a barrel to some nitride shop without testing the effect on the barrel extension. It may be safe or it might cause failure. I'm not concerned about a Sig barrel.
    All one needs to know is the alloy and it's thinnest section. The S&W "Sport" model I looked at today had the barrel extension treated as well. I didn't think to look closely at the LWRCi rifles.

    My OPINION is that they are probably low carbon steel - similar to the barrels (not to mention GLOCK & HK slides and barrels) and thus should be fine. The recrystallization temps of 4140, 4340 and 4150 are similar enough and high enough to not be an issue. The vendors have technical staff and they are very much willing to assist as they wish for more business. I have a listing of some who do nitrocarburizing if you're interested. Besides I'd like to get your opinion on a project I'm working on.
    "One cannot awaken a man who pretends to be asleep..."

  10. #170
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    http://blacknitride.com/

    they will be doing a few test barrels for me "260, 223" in the next month or so

    this is my 243wssm AR, it has a Shilen stainless hand-lapped select-match barrel, that i sent to these guys

    http://www.youtube.com/watch?v=jiegZyhd5l0

    Last edited by Ring; 07-10-11 at 00:06.

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