My First hydroformed 6 Dashe case. how does it look?

Discussion in '6BR, 6BR Improved & Wildcats' started by Linko, Feb 7, 2020.

  1. Linko

    Linko Silver $$ Contributor

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    I just Hydro formed my first 6 dasher (lapua) case. how does this look?

    Dasher 1.jpg
     
    Last edited: Feb 7, 2020
  2. Terry O

    Terry O Gold $$ Contributor

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    Looks OK. I don't turn necks all the way to neck shoulder junction to minimise chance of creating a thin spot in the new shoulder. You may want to try hitting it a little harder or a second time to produce a more pronounced angle at the body shoulder junction.
     
  3. drano38

    drano38 Silver $$ Contributor

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    Agree, hit it again, and/or harder.
    I have a Hornady Dasher hydroform die, and I hit it 3 times with a 3 lb deadblow hammer (and had to add more water after the first hit). I'd say they were 95% or better.
    I set mine to make the shoulder about .005 too long, then sized them back down to help form the shoulder. Don't know if it did any good, but seemed like a good idea at the time.
     
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  4. BenPerfected

    BenPerfected Gold $$ Contributor

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    Another option is to get DJBS to help you. DJ also does hydro-forming.
    Ben
     
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  5. Linko

    Linko Silver $$ Contributor

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    these are not turned necks.

    I am using a Whidden die
     
  6. tmwinds

    tmwinds Gold $$ Contributor

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    Go to DJ's Brass Service web site. You will see a photo of a properly hydro-formed dasher. It will have sharp a shoulder and will be ready to shoot in a match. No fire forming necessary.
     
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  7. mikeinct

    mikeinct Silver $$ Contributor

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    whatever you do. Do it quickly. get those cases de-capped & sized to dry. Don't leave them sitting around with water in them old primers. mike in ct
     
  8. golong

    golong

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    I would be concerned that you are going to blow out the shoulders - that thing has a ways to go yet. The first formed one on the left is the minimum I would go. The one on the far right is where you want to be.

    dasher-transform.jpg
     
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  9. johara1

    johara1

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    I think I would stick to fire forming with a uniform blow length of 1.550-3..... jim
     
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  10. Linko

    Linko Silver $$ Contributor

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    the one on the right is after optimal hydroforming and before case sizing correct?
     
  11. golong

    golong

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    Yes. For the most part, sizing only addressed the neck. Very little if any touch on the shoulder and body.
     
  12. Linko

    Linko Silver $$ Contributor

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    Here is my latest case Dasher 3.jpg
     
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  13. golong

    golong

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    Looks like you figured it out :)
     
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  14. deepwater

    deepwater Silver $$ Contributor

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    Linko,
    What is your current procedure? What did you change?
     
  15. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

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    That looks real good
     
  16. Linko

    Linko Silver $$ Contributor

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    Like most of us, it just needed a good beating!

    I wore out the seals on the Whidden die plunger o rings. They are a great place to do business. Always helpful and ready to support their products. new seals on the way. (bit of a learning curve for me in general, doing a hydroform case).

    Looking forward tome new rifle build. Getting these things ready so when it arrives I'll be ready to hit the range.

    Borden/Bartelin/B&A trigger/Masterclass/Nightforce/Seb

    Thanks guys for the reading on this.
     
  17. senderoll

    senderoll Gold $$ Contributor

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    Looking at your pictures. What is your overall length?
     
  18. drano38

    drano38 Silver $$ Contributor

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    Now we're looking good!
    Yep, need to hit it hard more than once, and they form up nice.
    Sounds like a nice rig. Enjoy.
     
  19. golong

    golong

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    I probably went though 1 o-ring for every 25 pieces of brass. Let's just say it was packages of o-rings.

    What got me was the plunger itself. It started to deteriorate at the top around 300, was really bad around 500, and was pretty much unusable by the time I got to 700 (limped it through).
     
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  20. comagutsa

    comagutsa

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    looks great on 2nd pic and if ya did turn it doesn't create a weak point
    hydro.jpg
     

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