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Accurizing/Sporterizing a Mosin Nagant

Discussion in 'Gunsmithing and Repairs' started by poolingmyignorance, Jul 17, 2012.

  1. Centurian22

    Centurian22 Well-Known Member

    Nice mods everyone. Clark thanks for the post and link / video. I was planning to shim the sear but you may have convinced me to bend instead. Any recommendations for bending without a dial gauge force meter or vice? Pliers and be careful bending just a tiny but at a time? Or without the gauges is it safer to shim?
  2. Shadow 7D

    Shadow 7D Well-Known Member

    Can someone post the Finn trigger blue prints (with translation please) they actually thinned and bent the sear slightly and adjusted the engagement angle of the sear.
  3. Alan LA

    Alan LA Member

    Clark, will the ATI take the abuse the Rock Solid mount will? By abuse, I mean recoil.
  4. Centurian22

    Centurian22 Well-Known Member

    Shadow7D: it's late and no translation but are these what you're after?



  5. Chris-bob

    Chris-bob Well-Known Member

    Awesome info.
  6. Saasta

    Saasta New Member

    Really late to the party, but here's a quick translation.

    Attached Files:

  7. Tolkachi Robotnik

    Tolkachi Robotnik Well-Known Member

    Thanks for all this information.

    You can also live with the trigger action as it usually is, a long take up, an obvious scritch or friction, and then you know it will go off directly if you keep pulling on it.
  8. bainter1212

    bainter1212 Well-Known Member

    Careful bending that sear. I broke two of them before I got it right. In my last two builds I sprung for the Timney trigger. I also got a thumbhole stock for mine, though not from Boyds. I am in the process of a metal refinish, and am considering DIY parkerizing.
  9. Clark

    Clark Well-Known Member


    The mount will take the abuse.
    As I said in the video, the stiffness is a function of the height cubed.
    I built a mount that shook the reticle out of a Leupold 2x7.

    The ATI design does not make that mistake. It has the height for the stiffness that raises the resonant frequency and reduces that amplitude of shaking.



    I drill a third hole, because I pull the barrel, but it works fine with just the two holes.

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