Few upgrades to my new build

Discussion in 'Gunsmithing' started by MOOSE39465, May 3, 2012.

  1. MOOSE39465

    MOOSE39465 Well-Known Member

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    Nov 11, 2010
    Hello everyone. Got a few questions I would like to ask you guys. Recently I had a custom rifle built for me and I wanted a few finishing touches put on my rifle. I would like to add a PTG bolt and DE bolt release. The rifle is a 300 wn mag that was built off a Sendero action. Everything has been trued up and ready to go. My question is I would like to buy a one peice bolt with all of the bells and whistles. Would you get one that was bigger then the factory bolt and ream your action or just get one built to factory specs? I would like a DE bolt release installed on my action also.
     
  2. J E Custom

    J E Custom Well-Known Member

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    Jul 29, 2004

    If the action is not very old and worn get the standard bolt. They are slightly larger (.001 to .0015)
    than the factory bolt and fit very nice.

    But remember , you have to head space the new bolt to your chamber. Buy a $35.00 go gauge
    and check it. If it between .001 and .003 it will be fine. (Use some .001 thousandths shim stock
    between the bolt face and the head space gauge, using some grease to hold the shims on.

    There is no reason to go with the over sized bolt unless your action is badly worn.

    J E CUSTOM
     

  3. MOOSE39465

    MOOSE39465 Well-Known Member

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    The action is from a 2010 Sendero 300 win mag so it should still be tight. Installing the shims behind the go gauge? Is that the same as checking it with a no go gauge? If so I have access to one through a friend of mine. I can order a go gauge the same time I order my bolt.
     
  4. J E Custom

    J E Custom Well-Known Member

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    The go gauge is a way of determining the minimum head space.

    The no gauge is for determining if you have excessive head space (If the bolt will close of the
    No Go Gauge you have to much head space) and it could be dangerous or at least hard on brass.

    I use the go gauge and set the head space depending on the rifles use and accuracy requirements
    by placing one shim at a time increasing the measurement by .001 at a time.

    If the bolt wont close on the go gauge you dont have enough head space, If it does, add shims
    one at a time until it feels tight (Caution ; Don't force the bolt to close because the gauge is
    heat treated and may/can damage the chamber) also remove the ejector plunger before using
    ether gauge or you may get a false reading.

    You don't have to remove the extractor, just the ejector.

    If your not sure about any of this try to find a good smith to check it out for you.

    Hope this helps

    J E CUSTOM
     
  5. MOOSE39465

    MOOSE39465 Well-Known Member

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    You explained it perfect. Thanks for the help.