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Thread: The annoying Wylde Chamber explained:

  1. #11
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    Quote Originally Posted by markm View Post

    Many wylde chamber barrels (including mine) don't play well with 5.56 pressure ammo. Popped primers, bulges, and swipes much more common.
    Got it, thanks. My reloads shoot just fine. I may try some of the crap XM193 I have stored to see how they shoot in my Wylde barrels.

  2. #12
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    Quote Originally Posted by HKGuns View Post
    Got it, thanks. My reloads shoot just fine. I may try some of the crap XM193 I have stored to see how they shoot in my Wylde barrels.
    Mine shoots my loads good too. The infamous combo was that hot ass Win Q3131 in wylde chambers. XM is a slightly less vicious in my experience.
    "What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v

  3. #13
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    Quote Originally Posted by markm View Post
    I've never got my White Oak to get sub moa. But in fairness it's an old complete upper built by those baffoons at ADCO. Their horrific pinning probably destroyed the barrel's accuracy.



    Many wylde chamber barrels (including mine) don't play well with 5.56 pressure ammo. Popped primers, bulges, and swipes much more common.
    If a student shoots M193 ammunition in a carbine, with a .223 Wylde chamber and carbine length gas system, it is not unusual to see popped primers. A few turns with a standard 5.56mm chamber reamer, designed to lengthen the free bore, will resolve the pressure issue, but accuracy drops off with 68g and 80g loads at 300 yards.

    Winchester Q3131A made in Israel is noticeably hotter than Q3131 made in CONUS.
    Last edited by T2C; 06-16-22 at 16:44.
    Train 2 Win

  4. #14
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    Quote Originally Posted by T2C View Post
    If a student shoots M193 ammunition in a carbine, with a .223 Wylde chamber and carbine length gas system, it is not unusual to see popped primers. A few turns with a standard 5.56mm chamber reamer, designed to lengthen the free bore, will resolve the issue, but accuracy drops off with 68g and 80g loads at 300 yards.

    Winchester Q3131A made in Israel is noticeably hotter than Q3131 made in CONUS.
    Maybe it was the "A" ammo. The 3131 at time was pretty sloppy looking ammo.. mixed headstamps, etc and was, sometimes, pretty hot stuff. Batches change over time, but I always favored the 3131A stuff years back.
    Last edited by markm; 06-16-22 at 17:17.
    "What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v

  5. #15
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    Quote Originally Posted by T2C View Post
    If a student shoots M193 ammunition in a carbine, with a .223 Wylde chamber and carbine length gas system, it is not unusual to see popped primers. A few turns with a standard 5.56mm chamber reamer, designed to lengthen the free bore, will resolve the issue, but accuracy drops off with 68g and 80g loads at 300 yards.
    Can you elaborate on what you’re calling M193?

    Real US .mil M193? South African? IMI?
    RLTW

    Former Action Guy
    Disclosure: I am affiliated PRN with a tactical training center, but I speak only for myself. I have no idea what we sell, other than CLP and training. I receive no income from sale of hard goods.

  6. #16
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    Quote Originally Posted by T2C View Post
    If a student shoots M193 ammunition in a carbine, with a .223 Wylde chamber and carbine length gas system, it is not unusual to see popped primers. A few turns with a standard 5.56mm chamber reamer, designed to lengthen the free bore, will resolve the pressure issue, but accuracy drops off with 68g and 80g loads at 300 yards.
    Accuracy will drop off with everything after getting honked out to a 5.56 chamber.


    There will never come a day when some goofball at a range pulls out a reamer and thinks he is going to work on one of MY chambers to 'help me out'.

    The easy solution to over pressure? Don't load the ammo so hot.

  7. #17
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    Quote Originally Posted by markm View Post
    Maybe it was the "A" ammo. The 3131 at time was pretty sloppy looking ammo.. mixed headstamps, etc and was, sometimes, pretty hot stuff. Batches change over time, but I always favored the 3131A stuff years back.
    I've never seen factory Winchester Q3131 or Q3131A with mixed headstamps.
    Train 2 Win

  8. #18
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    Quote Originally Posted by 1168 View Post
    Can you elaborate on what you’re calling M193?

    Real US .mil M193? South African? IMI?
    I am referring to Federal M193 55g FMJ. It chronographs at 3,180 fps out of one of my RRA carbines with 16" barrel and Wylde chamber. The same ammunition chronographs at 3,056 fps out of an Armalite carbine with 16" barrel with 5.56mm chamber. Federal M193 chronographed at 2,964 fps out of my Colt 6920 carbine.

    I did not chronograph the South African M193 I shot. The South African M193 was noticeably less accurate at 300 yards than the Federal M193 and Winchester Q3131 ammunition.
    Train 2 Win

  9. #19
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    Quote Originally Posted by T2C View Post
    The South African M193 was noticeably less accurate at 300 yards than the Federal M193 and Winchester Q3131 ammunition.
    Comparing minute-of-milkjug ammo to minute-of-milkjug ammo gets a guy what?

    A comparison between different lots of ammo that was never designed nor intended to be 'match grade' ammo.

  10. #20
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    Quote Originally Posted by T2C View Post
    I am referring to Federal M193 55g FMJ. It chronographs at 3,180 fps out of one of my RRA carbines with 16" barrel and Wylde chamber. The same ammunition chronographs at 3,056 fps out of an Armalite carbine with 16" barrel with 5.56mm chamber. Federal M193 chronographed at 2,964 fps out of my Colt 6920 carbine.

    I did not chronograph the South African M193 I shot. The South African M193 was noticeably less accurate at 300 yards than the Federal M193 and Winchester Q3131 ammunition.
    Thanks. Federal XM193 usually does reasonably OK around here in Wylde or 5.56 chambers. I like the brass. Most of the other “M193” is awful. Just awful. I’d highly recommend a chamber reaming, and even then…. awful.

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