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Thread: 5.56 vs. .223 chamber image source

  1. #31
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    Quote Originally Posted by jmart View Post
    OK, in the above context, who are "they"? There have been many references throughout this thread that many manufacturers produce Wylde chambered weapons, yet the only one I'm aware of is Rock River, and that's for their 20" and 24" barrels. Whether true versions, or tighter variants, who else besides RRA claims to produce Wylde-chambered weapons?
    "They" is every tier 3 AR manufacturers.

    Long before all the tier 3 AR manufacturers labeled their barrels "556 NATO" they actually labeled them either .223 wylde or didn't label them at all and just told people that they were chambered in that size. In actuality, they weren't even using a true "wylde" chamber.

    I am willing to bet that if I put a .223 Wylde reamer in those RRA varmint AR's, I would get material back.



    C4

  2. #32
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    Quote Originally Posted by C4IGrant View Post
    "They" is every tier 3 AR manufacturers.

    Long before all the tier 3 AR manufacturers labeled their barrels "556 NATO" they actually labeled them either .223 wylde or didn't label them at all and just told people that they were chambered in that size. In actuality, they weren't even using a true "wylde" chamber.

    I am willing to bet that if I put a .223 Wylde reamer in those RRA varmint AR's, I would get material back.



    C4
    I guess I assumed everyone either chambered in 5.56 NATO or .223 SAAMI, and only a very few used a Wylde reamer.

    So if I understand you correctly, Tier 3 mfg's label them NATO, but they really aren't.

    In effect they are Wylde's, but even then, they aren't true Wylde's, there a "tight" Wylde.

    But this "tight" Wylde is still a bit more generous than a .223 SAAMI, correct?

  3. #33
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    Quote Originally Posted by jmart View Post
    I guess I assumed everyone either chambered in 5.56 NATO or .223 SAAMI, and only a very few used a Wylde reamer.

    So if I understand you correctly, Tier 3 mfg's label them NATO, but they really aren't.

    In effect they are Wylde's, but even then, they aren't true Wylde's, there a "tight" Wylde.

    But this "tight" Wylde is still a bit more generous than a .223 SAAMI, correct?

    Never believe what is written on a barrel until you have verified it. Think of barrel manufacturers (or tier 3 AR makers) as used car salesman.

    I do not even think a lot of these companies even know what what kind of chamber they have in their own barrels! Here is a recent conversation I had with a company about their barrels:

    Me: Are your barrels 556 NATO?
    Them: Yes they are.
    Me: How do you know?
    Them: Because it says it on the barrel.




    C4

  4. #34
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    Is the reamer based on loose side of 5.56 chamber? I'm curious as to how come reamer removed material from Colt 6920 barrel?

  5. #35
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    Quote Originally Posted by Paulinski View Post
    Is the reamer based on loose side of 5.56 chamber? I'm curious as to how come reamer removed material from Colt 6920 barrel?

    The reamer really didn't remove anything the 6920. If you looked at the reamer with your naked eye, you wouldn't see anything on it.


    C4

  6. #36
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    Here's an interesting graphic off of Ned's site, a chamber comparison of SAAMI, NATO and one after running his Neck/Throat Reamer through it. As you can see, his reamer cuts them a tad more generously than even the NATO.


  7. #37
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    Quote Originally Posted by jmart View Post
    Here's an interesting graphic off of Ned's site, a chamber comparison of SAAMI, NATO and one after running his Neck/Throat Reamer through it. As you can see, his reamer cuts them a tad more generously than even the NATO.


    Yes, I know it is SLIGHTLY bigger and is why I get a some specs of chrome when reaming a 6920 barrel.


    C4

  8. #38
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    I'm a little skeptical about the above statements about wylde chambers. My experiences with them (5 guns, 7 barrels (4 of which are for games)) have been nothing but positive.


    However, I am mildly concerned that so many mfgs intentionally misrepresent their chambers. I appreciate folks like Noveske calling their chamber a "Match Mod0" or something.

    This spring I called a mfg that is well respected around here, and asked if I could supply the barrel for them to build their upper around because I wanted a non-standard chamber. I was told that wasn't necessary because their "5.56 NATO" already had the mods I wanted to it.


    It really doesn't take a lot of effort to put more info on the barrel that indicates a base chamber with some specific mods to it. e.g. "Ackley Improved" or "Dasher" or "Wylde"
    it would even become a selling point... a desirable feature.


    sounds like rob_s is working on a new chart

  9. #39
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    Quote Originally Posted by taliv View Post
    I'm a little skeptical about the above statements about wylde chambers. My experiences with them (5 guns, 7 barrels (4 of which are for games)) have been nothing but positive.


    However, I am mildly concerned that so many mfgs intentionally misrepresent their chambers. I appreciate folks like Noveske calling their chamber a "Match Mod0" or something.

    This spring I called a mfg that is well respected around here, and asked if I could supply the barrel for them to build their upper around because I wanted a non-standard chamber. I was told that wasn't necessary because their "5.56 NATO" already had the mods I wanted to it.


    It really doesn't take a lot of effort to put more info on the barrel that indicates a base chamber with some specific mods to it. e.g. "Ackley Improved" or "Dasher" or "Wylde"
    it would even become a selling point... a desirable feature.


    sounds like rob_s is working on a new chart
    If the chambers were ACTUALLY wylde then I wouldn't have any issues/concerns. The problem as I see it is that they are not.



    C4

  10. #40
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    Quote Originally Posted by C4IGrant View Post
    Never believe what is written on a barrel until you have verified it.

    C4
    How do you go about verifying it?

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