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Thread: chamber change

  1. #1
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    chamber change


    Can a 243 be re-chambered to 6mm Remington?
    16-223, 10 223, 10 FCP 308, 111 30-06, 110 30-06, 111 6.5x55, 112 338-06/6mm Rem, 110 300 WinMag,

  2. #2
    Basic Member darkker's Avatar
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    Re: chamber change

    ??? Well, the bore is the same so yes... The problem is that the actual chamber dimentions are enough different, that part of the barrel will need to be cut, rechambered, and re threaded. Depending upon the contour that may be difficult, and you will lose barrel length. With a Savage, the question becomes why not just buy a new barrel?? Unless you have a friend in the biz, it would be essentially the same price, and you get to keep the 243.
    I'm a firm believer in the theory that if it bleeds, I can kill it.

  3. #3
    nsaqam
    Guest

    Re: chamber change

    Darkker is absolutely right. A 6mm Remington reamer will not clean up a 243 chamber.

    A 6mm Remington Ackley Improved however WILL clean up a 243 chamber.

    The next question is, will a SA Savage magazine accommodate the longer 6mm Rem AI cartridge without the bullet being seated very deeply?

  4. #4
    Super Moderator Blue Avenger's Avatar
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    Re: chamber change

    guess 243AI or 6BR are the next options
    .223 Rem AI, .22-250 AI, .220 Swift AI .243 Win AI, .6mm Rem AI, .257 Rob AI, .25-06 AI, 6.5x300wsm .30-06 AI, .270 STW, 7mm STW, 28 nosler, .416 Taylor

  5. #5
    Basic Member
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    Re: chamber change

    I guess I could've just looked at a print but didn't know if someone on here had done one before. I wouldn't think there would be much setback to the barrel. Any body know?
    16-223, 10 223, 10 FCP 308, 111 30-06, 110 30-06, 111 6.5x55, 112 338-06/6mm Rem, 110 300 WinMag,

  6. #6
    nsaqam
    Guest

    Re: chamber change

    The 243 Win has very little body taper and the 6mm Rem has a lot of body taper.

    The barrel would have to be set back about a full 1 inch to accommodate the 6mm Rem.

    The AI though is a very simple operation and you can still fire factory 6mm Rem ammo in the AI chamber.

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