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Thread: 16" Midlength BCM won't feed steel casing. Normal or not?

  1. #121
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    Quote Originally Posted by djmorris View Post
    They didn't say for sure either way. The e-mail said something along the lines of "We inspected the upper/bcg and gave it a thorough cleaning; you should be all set. Let us know the results when you get to the range again". I believe I quoted the actual e-mail a page or so ago.

    I did e-mail BCM back about the issue just to see what they have to say regarding it. If it chokes on steel cased here and there it's not a big deal to me but at this point I've experienced at least some sort of malfunction with every type of ammo I've used yet including XM193, Steel cased 223, Brass cased 223 so that has me a bit worried. Again, I'll (hopefully) know more when I put a few hundred rounds of 5.56 through it in the next day or so.
    I don't remember which type of Magazines you are using but mark them. Then completely clean the chamber and BCG "AGAIN" with bore solvent and a chamber brush. Lube BCG "WET" with any of the better lubes. Use NATO spec ammo and specifically document any and all malfunctions. Take a camera, take pictures of the stoppages.

    Then get back to us after your range session.

    Until that day,
    Darkop
    Last edited by Darkop; 03-26-12 at 22:50.
    Right or wrong, black or white. Cross that line, your gonna pay, but in the dawn before the light, we live or die by shades of gray.

  2. #122
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    Quote Originally Posted by Sry0fcr View Post
    I think that's a good policy to have to keep people from bitching and moaning because they don't take into account that the "mil-spec" tier 1 guns are made to function reliably specifically with M855 and other NATO pressure 5.56 ammunition. If people want to shoot lower pressured ammo reliably they might be better served with a gun that's considered "over-gassed" since it was intended to run reliably with a wider selection of ammo. A midlength gun with a smaller sized gas port tuned to work with M855 is probably not a good choice for the steel cased .223 Russian ammo shooter. Define your requirements before you buy folks.
    Agree.
    The rifle should be tuned to the ammo you plan to run.
    A rig setup to run 58000psi M193 or 855 loads may not run with 42000 psi Tula(SWAG). If a rifle is setup with a H2 buffer and Tactical Spring (red) and is ported to run with M193 it may need a plain carbine spring and buffer to cycle with Tula. Or if you can you could open the port on the barrel a few thou. like a #51 or .067 instead of the normal .062
    On a rifle used for 3 gun or carbine courses I like to set it up with a H2 and Red spring and then port it to work with the load I normally use that way when it gets hot and dirty the extra force of the red spring and weight of the H2 keeps things moving even though it is hot and dirty.
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  3. #123
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    Just a thought, have you tried having anouther shooter take a turn shooting you rifle using the steel case ammo? I ask because of the different shooting stances people have and shouldering, plus have you noticed any signs of gas leakage at the front port area or the gas key on the bolt carrier? Look for any UNUSUAL signs of wearing in the inside of the upper receiver as if something may be a binding point. Do you know any other AR shooters that would lend you their BCG and a head spacing gauge so that you may try your upper with a different bcg?
    A side note, I am waiting for my new build upper to arrive, it is a DD light weight 16" middy and the bcg I chose is a fail zero nib (nickel borate) that I hope will allow the digesting of ALL ammo types as you were hoping for (for the same reasoning), your thread has kept me in suspense other than the ideas I have posted. I have many other AR rifles but have never tried steel cased before but I am getting ready to start.
    One rifle I have I chose a 5.45x39 upper setup to take advantage of super cheap shooting... that is a success story all by itself. Good luck, Savage

  4. #124
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    Quote Originally Posted by polymorpheous View Post
    Not likely in a BCM upper.
    Why not? No slam to them but errors get out. We had more than one short chambered Colt.

  5. #125
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    Quote Originally Posted by mike240 View Post
    Why not? No slam to them but errors get out. We had more than one short chambered Colt.
    I wrote not likely.
    Not never happened.
    Quote Originally Posted by scottryan View Post
    Anybody that owns or sells pistol versions of assault rifles is a bottom feeder, irregardless of the ban status of certain ammunition.

    They are illigetimate weapons that have no real purpose other than to attract retards to the gun community.

  6. #126
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    OP, have you considered that you may have a bad lot from the ammo manufacturer? Do you have a friend with a known good, properly ported, 16" midlength, preferably another BCM? I'd be curious how the ammo would run in another gun as similar as possible to yours. Russian ammo isn't exactly the most consistent from lot to lot. If it runs well on lower powered brass .223, I would be very suspicious of the ammo.

  7. #127
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    Quote Originally Posted by djmorris View Post
    So I finally got the chance to take my rifle out again yesterday for a few minutes. First time since I received it back from BCM.... and... well.. Same old shit.

    First magazine was American Eagle 223 brass. About 10 rounds in, it went click. I pulled the trigger again and it went bang. Light primer strike? Who knows. I'm not discounting anything with this rifle, at this point.

    Second magazine was the same 223 - functioned fine.

    Third magazine I loaded up the Wolf steel casing. Within about 5 rounds, I suffered the same malfunction that's been plaguing me since I assembled this carbine. The round makes it about half way before the BCG slammed closed on it. I cleared this malfunction by hitting the back of my stock and manipulating the charging handle. There was obviously visible dents on the round from the BCG. The bolt did not lock back after emptying this magazine.

    Afterwards, I did some testing with the 1 round in each mag to see if the bolt would lock back. It didn't lock back once the whole time when shooting steel cased.

    I had a standard carbine buffer in the whole time and I lubed my upper/bcg generously before heading out and added a bit more lube right before I loaded the Wolf ammo.

    I have e-mailed BCM about this. I'm not particularly happy to see people with identical rifles firing the same exact ammo without issue; meanwhile I encounter on average 1-2 malfunctions per magazine.

    We'll see what happens tomorrow - I'll be shooting strictly XM193 and if that malfunctions again then I'm officially ****ed.
    If I understand this correctly, it sounds like you're switching back and forth between brass and steel without cleaning the chamber. I thought this was a no-no.

    I'm also curious what action spring you have in the rifle. Everyone keeps talking about the buffer, but couldn't the spring play a part here as well?
    Steve

  8. #128
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    Quote Originally Posted by SteveL View Post
    If I understand this correctly, it sounds like you're switching back and forth between brass and steel without cleaning the chamber. I thought this was a no-no.

    I'm also curious what action spring you have in the rifle. Everyone keeps talking about the buffer, but couldn't the spring play a part here as well?
    It is a no no.


    Spring does play a part and if the spring is anything OTHER than a standard USGI SS spring, that could be the cause.


    C4

  9. #129
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    Deleted.
    Last edited by mtdawg169; 03-28-12 at 18:40.

  10. #130
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    Why not just stop using the steel cased ammo? And just feed it M193?
    Are the savings of the steel worth the trouble?

    Buy once cry once?

    Honest question, not trying to be a dick.

    I have only had my 6920 for about four months and have already spent more on M193 than I did on the rifle, that kinda sucks. But it has had zero malfunctions.

    But we work for a living, when you finally have free time and choose to spend it shooting, and you can't, how much is that time worth to you?

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