6 Dasher to 6 BR AI???

Discussion in '6BR, 6BR Improved & Wildcats' started by Phil, Sep 19, 2017.

  1. Phil

    Phil Gold $$ Contributor

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    How many threads do you have to knock off to be able to rechamber to the 6 BR AI from the 6 Dasher???

    2-3 threads???
     
  2. Pappy42

    Pappy42 Silver $$ Contributor

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  3. tclaunch

    tclaunch Silver $$ Contributor

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    Remmys are .062" per full revolution, so 2 threads, .125" as previously stated.

    18 pitch is 055", again 2 threads.
     
  4. swd

    swd Gold $$ Contributor

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    Unless you know the neck of the new chamber is the same or slightly larger I would set it back the length of the neck so you don't end up with a ring in the neck of your brass where the old chamber ended.
     
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  5. Alex Wheeler

    Alex Wheeler Gold $$ Contributor

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    Correct. 2 threads if the neck is the same or larger.
     
  6. Phil

    Phil Gold $$ Contributor

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    It`s larger.....;)
     
  7. swd

    swd Gold $$ Contributor

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    Your GTG! Varmint match??
     
  8. Phil

    Phil Gold $$ Contributor

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    Varmint without the false shoulder of the Dasher
     
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  9. DJSBRS

    DJSBRS Site $$ Sponsor

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    To chamber 6 BR AI Tim, can I use a PTG GO gauge an chamber .002 less than that to be in the middle of the road?
     
  10. tclaunch

    tclaunch Silver $$ Contributor

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    Yes, although I go even less. Half to 1 thousanths.
     
    Last edited: Oct 2, 2017
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  11. IdahoSharpshooter

    IdahoSharpshooter Gold $$ Contributor

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    I am not current on all of these variations. What would be the worth in spending a couple hundred dollars for a rechambering job and new dies? Is there a worthwhile velocity increase?

    thanks,

    Rich
     
  12. Boyd L.

    Boyd L.

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    I'm not current either but I'm following the development of the AI version with interest. My very inexperienced observations are that there is not a velocity increase, but rather there seems to be more accuracy consistency at a similar (??) velocity.
     

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