Why 6 BRA?

Discussion in '6BR, 6BR Improved & Wildcats' started by Curious, Oct 28, 2017.

  1. CaptainMal

    CaptainMal Silver $$ Contributor

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    Not so sure Tom...

    105 rds total of fire forming and maybe 40 test rds. on Alex's new BRA build for me:
    [​IMG]ZX4m9moaRFiBhMIZvflefg by Larry Malinoski, on Flickr

    Happy and sad because of you...

    [​IMG]PICT0058 by Larry Malinoski, on Flickr

    Look at the carbon build-up in front of the leade at the end of the throat. Sad to see this but happy you motivated me to look with my borescope. There does seem to be a bit of leade edge wear but nowhere as nasty as with my Dashers. Oh - I just used some CLR and BoreTech CR-4 to clean it out. Here's the same only after cleaning.

    [​IMG]PICT0060 by Larry Malinoski, on Flickr

    You can see a teeny bit of edge wear starting. I can form no conclusions about throat wear with BRA from this single example.
     
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  2. Alex Wheeler

    Alex Wheeler Gold $$ Contributor

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    Larry, thought you had a BR scope?
     
  3. johara1

    johara1

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    LMAO......... Jim
     
  4. CaptainMal

    CaptainMal Silver $$ Contributor

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    "Larry, thought you had a BR scope"?

    I have multiple BR scopes and that Competition plus many other brands also. Comp just returned from Nightforce as OK ... but noticed new turrent knobs on it. It will be on Steve's scope checker as soon as both he and the weather cooperate.
     
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  5. tom

    tom Gold $$ Contributor

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    You still have to clean the barrels:D
     
  6. tom

    tom Gold $$ Contributor

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    I thought you made people sign something?
     
  7. Alex Wheeler

    Alex Wheeler Gold $$ Contributor

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    Thats the secret to "why BRA" ;)
     
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  8. urbanrifleman

    urbanrifleman Gold $$ Contributor

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    Forgive my ignorance but I would say that "wear" is what we all call the barrel breaking in.
     
  9. BOB LEE SWAGGER

    BOB LEE SWAGGER Silver $$ Contributor

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    So... Using the AW reamer print is (which? 2.5 or 3) the Harrell's Dasher die with .082 off the bottom the deal with a Forster Co-Ax?
     
  10. maddysdad

    maddysdad

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    if you look up in one of the old rifle magizines there was a article about the 6 x 45 br they used 308 cases and formed them with a 45 degree shoulder.they had 2 barrels,1 a 14 twist another a 12 twist they used 80 grain bullets at 3000 fps out of a 24 inch barrel.except for the shoulder the 6mm bra is close to the one that jim shoots I would say.
    gary
     

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