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  1. M

    LR 308 Malfunction

    Start with this: 1.) Are you shooting suppressed, if so what suppressor? 2.) What BCG do you have and what is the weight? 3.) What is your buffer weight? 4.) What is your buffer length? 5.) What is your Receiver Extension/Buffer Tube internal Depth? 6.) What is your Buffer Spring, Length...
  2. M

    LR 308 Malfunction

    This
  3. M

    LR 308 Malfunction

    Not again :)
  4. M

    Overgassed or is it

    6.5 creedmore has a drastically different pressure profile(graph) vs 260 rem(same barrel length and gas system). Doesn't seem likely but it's true.
  5. M

    Oversized Barrel Extension Preventing Installation Of Barrel on Thermo Fitted Upper Receiver

    I use 350-400 in a toaster oven, and just leave the barrel in the freezer over night. Or use dry ice in an ice chest if you want to get colder.
  6. M

    AR-10 308 mag issues

    If you get metal mags, go KAC or LaRue, those are the most expensive choice. I also have/use a 10 round E-lander(I think, it's not marked) they are cheap but the ones I have run 100%. The spring tension is heavier in all of the above over pmags, I think that's a feature to make sure is present...
  7. M

    Ar10 feeding issues

    Slash has the spring for $15
  8. M

    Reloading Equipment WTB: Once fired 5.56 Lake City Year sorted brass

    https://brassbombers.com/brass-products
  9. M

    Spring/buffer for premature ejection problem on suppressed AR10

    From what I have seen the 7-5/8 set up is similar in its function with that 308 rifle spring. When your rifle was beating up brass did you happen to try and resize any of that brass? Shooting suppressed or not?
  10. M

    Spring/buffer for premature ejection problem on suppressed AR10

    If you "scienced" harder you wouldn't have so many unused springs/parts laying around not in functioning rifles. Sorry I had to. I will give you $10 for that heavy buffer :geek:
  11. M

    Spring/buffer for premature ejection problem on suppressed AR10

    I think you have something here, this is similar to the rifle 308 spring in the 7-5/8" extension..... a little longer spring in the same constraint, which elevates the bolt in battery spring pressure by a X(I think springs are from 1.6 to 2.0 lbs per inch?) If you can not get a spring to...
  12. M

    Spring/buffer for premature ejection problem on suppressed AR10

    That or they don't build a rifle with the consideration people will make hotter loads for them or add attachments that effect their initial engineering.
  13. M

    Spring/buffer for premature ejection problem on suppressed AR10

    Did you work next to the reactor? :)
  14. M

    Spring/buffer for premature ejection problem on suppressed AR10

    It does hurt to think sometimes
  15. M

    Spring/buffer for premature ejection problem on suppressed AR10

    Use your words. We could back calculate these numbers...
  16. M

    Spring/buffer for premature ejection problem on suppressed AR10

    What is impulse? So measuring forces play no part in figuring out what's going on, got it, I'll mark that down here in my learning book. ...the figure 12.8 is taken from slow motion camera measuring an ar10 bolt speed. I'm not arguing how a lighter operating system feels vs a heavy.
  17. M

    Spring/buffer for premature ejection problem on suppressed AR10

    Using peak carrier velocity and two buffer weights, excluding and ignoring all other frictional forces(drag/hammer, etc.), you obtain the same or very similar KE between a +5.3 oz buffer and an 8.5 oz buffer(plus bcg @20 oz) with only a 6.5% reduction in peak carrier velocity alone. Carrier...
  18. M

    Spring/buffer for premature ejection problem on suppressed AR10

    Just an FYI, the bypass mode will cover the front end of the barrel and inside of HG with carbon. Id give the 16" barrel a try if you can swap it easily, if its not easy then ignore :) The YHM Res is fairly high back pressure, as Im guessing you already know.
  19. M

    Spring/buffer for premature ejection problem on suppressed AR10

    Heavy springs and heavy buffers do not go together. I think everyone is missing that fact, and then people still keep saying the same thing, that heavy buffers "suck". Well again, if you use the parts wrong, and don't know how to use them or set them up, while not understanding what the parts...
  20. M

    Spring/buffer for premature ejection problem on suppressed AR10

    Cunnerman I believe it is...I think he is dealing with a small gas port in a Wilson barrel, he plans to try and use a sprinco blue to see if that works. His thread is around here some place.
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