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Thread: Applying loctite to increase accuracy?

  1. #11
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    I think it's stupid, but would be curious how Rocksett or VC3 would perform. Both dampen vibrations. Just out of curiosity, as I see only detriment in doing this, but would make for an interesting study when bored and wanting to waste a small portion of your life.

  2. #12
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    Bill Alexander has indicated in the past that while it is not *needed*, he has seen some benefit in using locktite on the barrel extension for grendels. It reduces some of the harmonics that can cause vertical stringing without having to over torque the barrel nut like some bench shooters do.

    He was very clear that in any single rifle you may not see a benefit. Remember, grendels are normally sub-moa even with carbine rack grade barrels and half MOA is not uncommon with some care and decent ammo. So the grendel crowd is more accuracy oriented. Bill recommends 243, and it handles the heat in the receiver sections with no problem, yet can still be removed if needed.

    For a typical hard use 5.56 carbine I personally do not believe you would see a benefit.

    If you feel the need to do something on the gas block or hider, many use Rockset, which can handle the higher temps. I personally do not believe it's needed on a properly assembled m4'gery.

    Of course, if you are concerned about the sight block most will tell you you should pin it, so the only benefit to "bedding" is for gas seal, which should not be an issue with decent components.

  3. #13
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    The arguments for and against I won't dive into, but the proper Loctite product to use would be Loctite 609 IIRC, which is a sleeve retainer compound and will resist heat.

    Unless you're running a select fire weapon that is suppressed, it doesn't really get that hot, and the heat it does produce is pretty quickly disapated (sp?).

    Also understand, you will only be able to maybe tell a difference when using a high grade barrel with at a minimum match quality ammo, if not handloads worked up for the particular rifle. Even then, at best you are looking at an incremental improvement. Something like this isn't going to make a 3 MOA rifle a 1/2 MOA rifle.

    Loctite is a cyanoacrylate (superglue) derivative. Why would you want to glue those pieces together?
    That isn't accurate.

    Cyanoacrylates work by reacting to the trace amount of water found in the materials in/on which they are acting upon. Loctite, and other similar threadlockers work by reacting to a lack of oxygen and by the reaction of the chemical with metal ions in the work piece.

    The bond and ultimate strength of a loctite application is very much dependant on the substrate. Black oxide results in a very strong bond, stainless steel would be much weaker. If fact, there are loctite compounds and primers which are specifically for substrates which may be coated or comprised of a material which will result in a weaker bond.

  4. #14
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    If you don't mind me asking, what kind of weapon is this, what are the distances do you normally shoot, what kind of shot groups are you producing and what is your skill level?
    For God and the soldier we adore, In time of danger, not before! The danger passed, and all things righted, God is forgotten and the soldier slighted." - Rudyard Kipling

  5. #15
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    I do that with my Ruger 10/22's that I build with the red loctite before I fully tighten the barrel lock, with barrels that are slightly loose and ruger receivers are not the tightest of tollerences. It is an accepted practice with that gun but with an AR I would see no benifit to it due to the way the barrel nut fits on.

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    We're already starting to see the sad results of Marijuana legalization in parts of our country...
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    You forgot to mention something about Pappabear.

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  9. #19
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    Quote Originally Posted by kisskaren View Post
    Anyone ever heard of applying loctite 242/243, between the barrel extension & receiver, as a "bedding compound" , to improve accuracy?



    http://www.youtube.com/watch?v=Wgw6M...Zd-Rg&index=51

    http://www.youtube.com/watch?v=uOurwaQ3J2Q
    It makes the connection between the barrel and receiver more rigid which can help accuracy although you probably wouldn't notice on a combat firearm. Highpower competitors and custom builders have been doing it or similar for 20 years. If the receivers bore is small enough(like Mega or Vltor) that it makes a snug fit on the barrel extension it will not help. If you need to tap the barrel to get the extension in the receiver there is no need.
    Last edited by constructor; 12-30-12 at 10:44.
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  10. #20
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    Quote Originally Posted by bp7178 View Post
    You forgot to mention something about Pappabear.
    Those two are one of my favorite couples. So happy together!

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