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Thread: .50 Beowulf?

  1. #101
    Gunco Regular Gunter's Avatar
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    IIRC, the Coldsteel RPK should work with the Yugo trunnion. If you use a Romy or std rear stock tang you might need to trim a little off the sides due to the thicker sheet metal.
    "Take time to deliberate, but when the time for action has arrived, stop thinking and go in."

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  2. #102
    TRX
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    Looks like the RPK receiver will be the way to go, then. I'll put one on the list. Looks like I'll need the proper metric reamers too. I have to order some more expendable tooling next week, so I'll pick some up then.

  3. #103
    TRX
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    Default sprung bolt

    Since I'm twiddling my thumbs waiting for brass, does anyone have an opinion on the standard free-floating firing pin vs. the sprung firing pins?

    I can get an used, ordinary Yugo bolt for $35, a brand new Norinco sprung bolt for $65, or a brand new Valmet sprung bolt for $128.

    I'll be using reloads, with standard CCI large rifle primers.

    Theoretically the sprung bolt looks like a good idea, but in the exploded views, the spring looks like it came out of a BIC.

  4. #104
    No Hope For Me 1biggun's Avatar
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    If I was doing the relaoding I would just go un sprung and use NATO style harder primers. (if you can ever find them again) I load all my 7.2x39 this way.

    there is also ways to convert a normal bolt to sprung.

    It is a nice feature and adds some safety. It really should be on all guns that mmay fire commercial ammo. I noticed my rommy 223 kit dosent have a spring loaded pin IMOO it should. it likely is actualy a 5.56 nato chamber. I have seen some pretty good dents even in hardend primers from the pin hitting it.

  5. #105
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    I would be interested in the spring loaded pin conversion, then I wouldn't worry so much of slam fires.

  6. #106
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    Hey, TRX, do you want to sell the welded up barrel on your Chinaman AK? I'd love to have that bayonet lug/front sight block for my MAK90. PM sent.

  7. #107
    TRX
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    Quote Originally Posted by MaadiMan View Post
    Hey, TRX, do you want to sell the welded up barrel on your Chinaman AK?
    We could make a deal, but you'd have to wait until the ATF paperwork dance is done.

  8. #108
    TRX
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    Quote Originally Posted by [486] View Post
    I would be interested in the spring loaded pin conversion, then I wouldn't worry so much of slam fires.
    I guess my questions should have been:

    A) do slam fires happen often enough to worry about?

    B) if so, does the wimpy-looking spring do anything to prevent them?

    The recoil spring is what brings the bolt into battery. It shouldn't matter what the caliber is. I haven't been able to find much about the springs, other than the PSLs use a longer one. Are they all the same, then?

  9. #109
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    Quote Originally Posted by TRX View Post
    We could make a deal, but you'd have to wait until the ATF paperwork dance is done.
    We may just have a deal. Keep me posted.

  10. #110
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    Quote Originally Posted by TRX View Post
    I guess my questions should have been:

    A) do slam fires happen often enough to worry about?

    B) if so, does the wimpy-looking spring do anything to prevent them?
    They don't, but I hear about them a few times, and think of how sticky the firing pins on the yugo kits I messed with were, even after cleaning them out. I'd use a beefier spring, like galils use.

    Quote Originally Posted by TRX View Post
    The recoil spring is what brings the bolt into battery. It shouldn't matter what the caliber is. I haven't been able to find much about the springs, other than the PSLs use a longer one. Are they all the same, then?
    On the AK it slows down the carrier, the carrier isn't supposed to hit the rear trunnion hard, if at all. The PSL's carrier hits the trunnion HARD, it has reinforcement plates, but it still does something it shouldn't, so if they were available I'd put in a much stronger recoil spring. Also, with mags with even a tiny spot of rust they'll catch the rim, and it'll jam, a stronger spring would hopefully "power through" the resistance.
    Now that I think of it I wonder if PKM recoil springs are big enough.

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