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Thread: HELP! Bolt stuck half closed

  1. #21
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    Question for you, Iraqgunz; when you ream the chambers on those carbines, does it go through the chrome lining? Or is there still chrome in the chamber when you're done reaming them to 5.56?

  2. #22
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    Quote Originally Posted by Iraqgunz View Post
    Robert,

    I believe that the best answer I can give is that I was able to ream at least 70 carbines with the first reamer. We then purchased another and I am using that as a chaser to prolong it's life.

    Since I have done the reamings the frequency of malfunctions using the Prvi Partizan and Bulgarian Arsenal 5.56 SS109 ammo either greatly decreased or ceased all together. But, since there were still some issues I recommended that we use the ammo only for punching paper, in the 5.56 AK's, or in an emergency in the Bushmasters. We had to weigh the options available to us and reaming the chambers was the best option we had. M855 ammunition is not easy to get here and we had to reserve it for duty use only.
    Ig,

    Thanks for the reply. If I understand you correctly, the now bare 4150 chambers, reamed to 556, are trouble free with M855? Comparably so to chromed 556 chambers when using M855? Do Chromed 556 chambers deal better with the PP SS109 than the reamed CrMo chambers?

    Again many thanks for your expertise.

    Robert

  3. #23
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    Should not be taking that much off to loose all the chrome.
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  4. #24
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    Update

    I took it to an old friend of mine who knows a very reputable (although reclusive) master Colt armorer. They were stationed in Vietnam together; my friend was a Captain in the Rangers, and according to him, if anyone can fix it, this guy can. I'll update the thread with the results when I get it back. Should be tomorrow or the day after.
    A man with a gun is a citizen. A man without a gun is a subject.

  5. #25
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    According to Ned it does remove some, but I have not seen any issues after doing it.

    Quote Originally Posted by steve-oh View Post
    Question for you, Iraqgunz; when you ream the chambers on those carbines, does it go through the chrome lining? Or is there still chrome in the chamber when you're done reaming them to 5.56?



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  6. #26
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    The chambers are not bare. It only removes enough to allow true 5.56 ammo to fire w/o issues. Let me clarify that we never had real issues with M855 ammo, which is not the same as SS109. We had issues with the Prvi Partizan 5.56 SS109 and Bulgarian SS109 ammunition. SS109 is a characteristic, not a classification.

    I honestly don't know how chrome moly performs over true chromed chambers, but if your chamber isn't a true 5.56 it won't matter what it's made of.

    Quote Originally Posted by rjs100 View Post
    Ig,

    Thanks for the reply. If I understand you correctly, the now bare 4150 chambers, reamed to 556, are trouble free with M855? Comparably so to chromed 556 chambers when using M855? Do Chromed 556 chambers deal better with the PP SS109 than the reamed CrMo chambers?

    Again many thanks for your expertise.

    Robert



    Owner/Instructor at Semper Paratus Arms

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  7. #27
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    GOT IT UNSTUCK!!!

    As it turns out, the gunsmith did not have to "mortar" the weapon, but rather soaked it in CLP for an hour, then tapped the round out gently with a cleaning rod. Unfortunately, he threw the brass away before I could request it for photographs.

    The culprit was a split and expanded casing that blocked the breech. There was, believe it or not, no primer or case parts in the BCG...it was intact in the back of the round. So it looks like weak brass was the cause. These were not reloads, but rather factory Prvi Partizan 5.56 ammo. There was no damage to the chamber, barrel, or BCG whatsoever. The rifle received a full once-over before I got it back, and again when I picked it up.

    Iraqgunz...while I had the gun at the shop, I had the smith check the chamber, and even though it is a BM, it does have a true 5.56 chamber. Maybe mine's newer since it actually has a correct chamber? Who knows... He advised me to keep it well lubricated and actually gave me a tube of Mi-Comm TW-25B grease.

    Oh, and none of this cost me a penny.
    Last edited by citizensoldier16; 04-14-09 at 22:05.
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  8. #28
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    Quote Originally Posted by citizensoldier16 View Post
    GOT IT UNSTUCK!!!

    As it turns out, the gunsmith did not have to "mortar" the weapon, but rather soaked it in CLP for an hour, then tapped the round out gently with a cleaning rod. Unfortunately, he threw the brass away before I could request it for photographs.

    The culprit was a split and expanded casing that blocked the breech. There was, believe it or not, no primer or case parts in the BCG...it was intact in the back of the round. So it looks like weak brass was the cause. These were not reloads, but rather factory Prvi Partizan 5.56 ammo. There was no damage to the chamber, barrel, or BCG whatsoever. The rifle received a full once-over before I got it back, and again when I picked it up.

    Iraqgunz...while I had the gun at the shop, I had the smith check the chamber, and even though it is a BM, it does have a true 5.56 chamber. Maybe mine's newer since it actually has a correct chamber? Who knows... He advised me to keep it well lubricated and actually gave me a tube of Mi-Comm TW-25B grease.

    Oh, and none of this cost me a penny.
    What did your gunsmith use to figure out the chamber size?


    C4

  9. #29
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    Quote Originally Posted by C4IGrant View Post
    What did your gunsmith use to figure out the chamber size?


    C4
    What I was wondering im guessing he looked at the barrel and said it was 5.56.

  10. #30
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    You must be linked with me psychically. I was wondering the same.

    CS16,

    I will be highly surprised if your chamber is true 5.56. I can almost guarantee that if you put Ned's chamber reamer in there it is going to pull stuff out. One thing I meant to mention earlier after looking at your pics. It would appear that your weapon was seriously lacking lubrication. In the future you want it to be really wet. JM2CWYMMV.

    Quote Originally Posted by C4IGrant View Post
    What did your gunsmith use to figure out the chamber size?


    C4



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