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  1. Replies
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    It actually can be. You need a weight at the...

    It actually can be.

    You need a weight at the very end of the beam.
    Like a tuner.

    It is often larger than bore diameter on the inside.
    The node will than be at some distance BEHIND the...
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    In this case displacement is movement. In any...

    In this case displacement is movement.

    In any case nodes are places of minimal motion.
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    I managed to get a DU perpetrator before the...

    I managed to get a DU perpetrator before the Government clamped down on them being sold.

    The army sold off some from decommissioned ammunition by accident.

    The new ones are a lot longer than my...
  4. Thread: Uh oh?

    by brickeyee
    Replies
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    1,807

    Really looks like a bad piece of brass. It...

    Really looks like a bad piece of brass.

    It happens in mass production.

    The what to be sure would be to section the case and see how thick (and hard) the brass is at that point.
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    No. It is a node. An place of lesser...

    No.

    It is a node.
    An place of lesser movement.

    Anti-nodes are locations of maximum movement.
    That would make the muzzle be moving even worse.
    ...
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    Been doing it for a long time. One more thing...

    Been doing it for a long time.

    One more thing to create better uniformity among cases.

    Really had to get into it when I had .22-250 AI and 6 mm REM AI barrels made for my live varmint gun.
    ...
  7. Thread: cool font?

    by brickeyee
    Replies
    25
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    2,090

    I tend to prefer sans-serif fonts. Simple and...

    I tend to prefer sans-serif fonts.
    Simple and elegant.

    What you expect on a high priced firearm.
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    DU is 19.1 gm/cm^3 Tungsten is 19.3 gm/cm^3 ...

    DU is 19.1 gm/cm^3
    Tungsten is 19.3 gm/cm^3


    If you can find DU it would be an excellent mass source.

    The government sort of has a corner on the market though.
    They are about the only...
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    THAT looks like a great pair. I always try to...

    THAT looks like a great pair.

    I always try to avoid shooting at the last position on indoor ranges against a wall.

    It is not to bad with a .22 RF, but a large gun (.45 Win mag in my Wildey) is...
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    I generally throw those out without a second...

    I generally throw those out without a second thought and use a Bondhus
    key or driver.

    Having high quality hex tools is worth the additional money.

    Correctly hardened, correctly sized.
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    It is going to be affected by the stiffness of...

    It is going to be affected by the stiffness of the barrel itself.

    Barrels are for the most part not all that hard.
    This makes the vibration less than 'tuning fork' precise.

    The mass of the...
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    A wider cut would greatly increase the amount of...

    A wider cut would greatly increase the amount of force required to make the cut.
    This would also increase the clamping force required to hold the shell from turning in the clamp.

    I use a very...
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    The step from even Speer to a Berger is often...

    The step from even Speer to a Berger is often night and day.

    Berger's are incredibly uniform in weight and shape.

    Years ago one of the BR makers tried to speed up the bullet presses they used....
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    Nickel plated cases will knock the cutting edge...

    Nickel plated cases will knock the cutting edge off real fast.

    Like the first turn on the steel cutter.

    The stop is on the mandrel.
    You adjust it so the case mouth stops on it.

    The little...
  15. Thread: My Spidah

    by brickeyee
    Replies
    28
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    3,880

    Anyone with a little training should be able to...

    Anyone with a little training should be able to set up a quality lathe to get one digit past the readings on the cross slide.

    You do need a lath that is stiff enough and vibration to hold it.

    A...
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    "Noise Reduction Rating (NRR): 22" Only thing...

    "Noise Reduction Rating (NRR): 22"

    Only thing that worries me.
  17. Replies
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    I have been salt bath annealing .22-250 AI and 6...

    I have been salt bath annealing .22-250 AI and 6 mm Rem AI for many years.

    I have very nice sets of cases that are matched in just about every way.

    I even sort them out by neck wall variation...
  18. At one point I had a very precise chart that...

    At one point I had a very precise chart that showed crystal
    structure changes in brass as a function of time and temperature.

    It used larger pieces of cartridge brass to allow easier sectioning...
  19. Covering it is often not the best idea if it...

    Covering it is often not the best idea if it keeps it wet from tissue leakage.
  20. Thread: My Spidah

    by brickeyee
    Replies
    28
    Views
    3,880

    Armatures are precision but not all that tight. ...

    Armatures are precision but not all that tight.

    Brushes have springs behind them for a reason.

    And the development of super magnets and poly-phase stators with digital commutation
    has given...
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    For the most part you do NOT want the neck...

    For the most part you do NOT want the neck annealed to 'dead soft.'

    It will not produce adequate neck tension until it has been loaded and fired a few times.

    3000F of flame temp is not the same...
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    500C is 932F. 550C is 1,022F Way to hot. ...

    500C is 932F.

    550C is 1,022F

    Way to hot.

    For the most part you can also adjust the salt mixture so it tends to melt at just below the desired temperature.

    It is not JUST temperature but...
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    You need a VERY tight setup for light cuts and...

    You need a VERY tight setup for light cuts and best surface finishes.

    The lightest play or flex messes the surface finish up very quickly.
  24. 'Old age' is the one condition no one wants to...

    'Old age' is the one condition no one wants to leave though.
  25. If you are right handed and right eyed put the...

    If you are right handed and right eyed put the flags on your left.

    You can keep both eyes open and see the target with your right eye through the scope and the flags with your left eye.


    It...
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