Scope Mounting - How much torque on the screws?

Discussion in 'Gunsmithing' started by trebark, Feb 6, 2009.

  1. trebark

    trebark Well-Known Member

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    I'm playing musical chairs with the scopes on my rifles and I've got a torque screwdriver.

    1. How much torque should be put on the screws mounting the bases to the action?

    2. How much torque should be put on the screws for the top half of the ring?

    Thanks!
     
  2. bowhunthard

    bowhunthard Well-Known Member

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    Wheeler recommends 15 to 20 in/lbs on standard scope ring screws on the upper halves. Supposedly after 20 in/lbs, the rings can handle it, but the bit has a possibility of breaking.

    The side bolts/screws have a large range of torque specs depending on what rings you have. Tactical rings that attach with a socket can handle as much 65 in/lbs, I'd probably say about 25 in/lbs on standard Weaver-style bases.

    Good luck, start low and tighten until you are comfortable.
     

  3. J E Custom

    J E Custom Well-Known Member

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    280

    Do a search on Torque Recomendations.

    If I could link it I would .

    Back in november 08 I started a thread on this subject that might help with all of the
    torque values for most applications used on a rifle.

    J E CUSTOM
     
  4. trebark

    trebark Well-Known Member

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  5. NesikaChad

    NesikaChad Well-Known Member

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    If your knuckles aint turnin white it aintz tihhttz enufz.

    J/K.
     
  6. Dano1

    Dano1 Well-Known Member

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    I guess that you would call that Farmer Tight, Right ??? :D
     
  7. BobCl

    BobCl New Member

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    Thank you, J E Custom! Your recommendations have been printed and posted over my bench.
     
  8. J E Custom

    J E Custom Well-Known Member

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    You are welcome !!!!

    And that makes at least too of us that has the torque chart handy.

    J E CUSTOM
     
  9. trebark

    trebark Well-Known Member

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    There's three of us with the torque chart on the bench!

    Love lighting up a five year old thread!
     
  10. J E Custom

    J E Custom Well-Known Member

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    Maybe Len will consider it for a sticky. Useful information never gets old, Only the people that use/need it. I can't remember all of the values so I still use it instead of trying to commit everything to memory.

    It keeps me from doing the farmer tight method mentioned.

    J E CUSTOM
     
  11. Sully2

    Sully2 Well-Known Member

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    The question has been asked on several occasions
    what the torque for bedding screws and scope bases
    should be so I though this might be helpfull.

    "NOTE" These are based on full engagement of threads.

    Wood, Fiberglass or Synthetic stock without bedding pillars-
    40 inch-lbs.

    Wood, Fiberglass or Synthetic stock with bedding pillars -
    up to 65 inch-lbs.

    Hard-use service-type rifles in synthetic with pillars-
    up to 65 inch-lbs.

    Law enforcement & military rifles are 65 inch-lbs on each
    of the guard screws.

    On rifles with three guard screws the middle screw should
    be only slightly tightened.

    Scope base screws 30 inch-lbs "MAX"

    Windage screws 30-40 inch-lbs "MAX"

    Scope ring screws (Aluminum Rings) 10-15 inch-lbs "MAX"

    Scope ring screws (Steel Rings) 15-20 inch-lbs "MAX"

    Note' If scope base and ring Screws have less than 5 threads
    of engagement they should be replaced with longer ones.

    Barrel to receiver Torque 35 ft/lbs minimum to 95 ft/lbs Max.

    If an anti seize compound is used instead of a light oil use 65
    ft/lbs max to prevent over torquing.

    From JE Customs
     
  12. BobCl

    BobCl New Member

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    This came in handy today, so thanks again!