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Chamber neck question

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  #1  
Unread 03-07-2010, 11:35 AM
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Chamber neck question

My loaded rounds measure .310. How tight can the chamber neck be to just get by without turning brass necks??
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  •   #2  
    Unread 03-07-2010, 12:06 PM
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    Re: Chamber neck question

    Just my opinion, but I would want .313 as an absolute minimum would prefer .314 or .315. Now that's in an "out in the elements" hunting rig, in a "from the bench only" rig I'd be much less concerned with dirt and moisture in the chamber and could tolerate .312 or .313 with a little more comfort.

    Chris
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      #3  
    Unread 03-08-2010, 03:10 PM
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    Re: Chamber neck question

    I was just told that .316 is as tight as they can go. Is this 2 much?
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      #4  
    Unread 03-08-2010, 03:11 PM
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    Re: Chamber neck question

    I was just told that .316 is as tight as they can go. Is this 2 much? not enough?
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      #5  
    Unread 03-08-2010, 07:19 PM
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    Re: Chamber neck question

    i chambered my 6br with a .272 nk reamer, loaded rounds measure .269, and i have no problems with it, so .313 or so should be fine.
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      #6  
    Unread 03-08-2010, 07:44 PM
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    Re: Chamber neck question

    Quote:
    I was just told that .316 is as tight as they can go. Is this 2 much?
    If that is as tight as they can go....unfortunately thats what you get.

    I don't know for certain, but I doubt .003 on a side would be detrimental, just maybe not optimal depending on the intended use.

    I'd bet there are factory chambers with more clearance than that out there.

    Chris
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      #7  
    Unread 03-08-2010, 11:00 PM
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    Re: Chamber neck question

    My rules:

    Rifles used in sterile/controlled settings:

    No less than .0015" per side

    Service guns:

    No less than .0025 per side

    You have to have room for the neck to expand to release the bullet. Failure to do so will result in more accuracy/pressure "fits" than if you just left the dern things alone and ran a SAAMI neck to start with.
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