Crown placement question...

Discussion in 'Gunsmithing' started by Speedygoss, Mar 27, 2013.

  1. Speedygoss

    Speedygoss Well-Known Member

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    Should the crown be at the end of the barrel before the brake, at the end of the brake or both?

    Thanks
    Speedy.
     
  2. J E Custom

    J E Custom Well-Known Member

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    It should be flush with the back of the first chamber. (if you look inside the first port or chamber of
    the break you should not see any barrel except the crown).

    To far back, it will disrupt the gas escaping the crown. To far up it will defeat the function of the first chamber or ports.

    J E CUSTOM
     

  3. FEENIX

    FEENIX Well-Known Member

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    JP Enterprise Beenie Cooley muzzle brake on my .270 AI.

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  4. Speedygoss

    Speedygoss Well-Known Member

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    I think my question might have been a little confusing. I have a Remington 700 Sendero chambered in 338 RUM. The previouse owner had a shrewd muzzle brake put on it. The brake itself has an 11 Deg. crown on it but the barrel (brake removed) has been faced off square (perpendicular to the bore.) there is no crown what so ever on the end of the barrel where the threads for the brake start.

    Here are some pictures. (please see the last picture)
     

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  5. Speedygoss

    Speedygoss Well-Known Member

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    FEENIX

    You obviously have a crown on the end of the brake, It appears you also may have an 11 Deg. crown on the end of the actual barrel. (before the brake.)
    Mine doesn't have this.
     
  6. J E Custom

    J E Custom Well-Known Member

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    A crown is a clean exit for the bullet. It can be strait like yours (Some smiths prefer a straight crown
    for muzzle brakes because they don't need the protection that an un braked barrel does.

    A crown is to protect the muzzle from nicks and scratches. They can be 11o +, recessed, buttoned, chamfered ETC.

    I personally like the 11o behind a break so that I can unscrew the brake and install a thread protector
    when hunting if the need arrives.

    J E CUSTOM
     
  7. stenger

    stenger Well-Known Member

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    Behind a brake a prefer straight-flat 90 degree crowns.
     
  8. Hapcustoms

    Hapcustoms Member

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    There are a million and one ways to do it. I perfur 11 degree face with a 90 degree chamfer. Like stated above if needed a thread protector can be in installed.