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Thread: Old BR Rifle Question

  1. #1
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    Old BR Rifle Question

    Anyone know how thick the neck of the brass was back about 1991 for a 6BR?
    Thanks
    Dave

  2. #2
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    Quote Originally Posted by Dave Coots View Post
    Anyone know how thick the neck of the brass was back about 1991 for a 6BR?
    Thanks
    Dave
    Dave, the very first BR style Rifle I shot was chambered for 6BR using Remington Brass. This was in about 1993.
    The neck thickness averaged about .013 to .014 inch.The chamber had a .274 neck. I bought the rifle at a gun show with a couple of boxes of Remington 6BR brass.

    That Remington Brass varied as much as a full thousandth and a half as you measured the thickness in different spots.

    When Lapua came out with their 6BR brass around that same time, even with the necks turned to that thickness, it would not chamber because of the slightly larger web diameter.

    I donít know what the original Norma measured.
    Last edited by jackie schmidt; 05-16-2019 at 11:56 PM.

  3. #3
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    Thanks for the info Jackie. I'm working on trying this thing out. 8tw and an action a guy made in
    1991. Thumbhole stock.

    Later
    Dave

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    Hey Dave, you forgot to post pictures. We're gonna need those.

    Jerry

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    Dave, I have some NOS Remington 6BR brass in the factory boxes.

    -The necks measure .014
    -At .200 ahead of the extractor groove, it's .4694-ish (depends how I hold my tongue ).

    Good shootin'. -Al

  6. #6
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    Quote Originally Posted by Al Nyhus View Post
    Dave, I have some NOS Remington 6BR brass in the factory boxes.

    -The necks measure .014
    -At .200 ahead of the extractor groove, it's .4694-ish (depends how I hold my tongue ).

    Good shootin'. -Al
    Thanks Al. Having trouble sending pic on cell Jerry. Will send when I get home. Nice forecast for tomorrow.....rain and 20 mph wind. Perfect.

    Later
    Dave

  7. #7
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    Al, I have 2 cases of new Remington 6BR brass and the necks vary from .012-.013 with my Mitutoyo ball mic and the diameter just above the extractor groove is .4643. Mine are the 6mmBR brass catalog number 2270.

  8. #8
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    Quote Originally Posted by Butch Lambert View Post
    Al, I have 2 cases of new Remington 6BR brass and the necks vary from .012-.013 with my Mitutoyo ball mic and the diameter just above the extractor groove is .4643. Mine are the 6mmBR brass catalog number 2270.
    Hi Butch. It's crazy how much that stuff varies, isn't it? The guys back then trying to get those BR's to shoot must have been pulling their hair out at times.

    I've got some Remington head stamped 22BR, also. Will mic those for grins. -Al

  9. #9
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    Thanks Al and Butch

    My Lapua measures .013 and I turn to .0125 Don't have measurement right here for the base. Here's a pic of the rifle. I rotated the attachment but it still changed it when I posted.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Last edited by Dave Coots; 05-21-2019 at 09:49 AM.

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