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To lap or not to lap

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  • TruEdge
    Senior Member
    • Jun 2011
    • 1672

    To lap or not to lap

    So I recently purchased a leupold vx-2 with the STD 2 piece dovetail bases and STD extension rings. I mounted the bases and was wondering about lapping. I want to mount the scope properly and was curious how many people actually lap their rings. I would hope the leupold rings would be quality and not absolutely need to be lapped to get a good hold on the scope. So what do you guys think?
    The laws that forbid the carrying of arms are laws of such a nature. They disarm only those who are neither inclined nor determined to commit crimes.... Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man." - Thomas Jefferson (quoting 18th century criminologist Cesare Beccaria)"
  • #2
    hermosabeach
    I need a LIFE!!
    • Feb 2009
    • 19182

    Lap

    It gives the best fit between the scope and the rings.

    For all we spend on optics, toys and ammo, a lapping kit will last forever
    Rule 1- ALL GUNS ARE ALWAYS LOADED

    Rule 2 -NEVER LET THE MUZZLE COVER ANYTHING YOU ARE NOT PREPARED TO DESTROY (including your hands and legs)

    Rule 3 -KEEP YOUR FINGER OFF THE TRIGGER UNTIL YOUR SIGHTS ARE ON THE TARGET

    Rule 4 -BE SURE OF YOUR TARGET AND WHAT IS BEYOND IT
    (thanks to Jeff Cooper)

    Comment

    • #3
      mark501w
      Senior Member
      • Apr 2011
      • 1699

      I also helps to cut back on ring marks if you like to swap scopes around.

      Comment

      • #4
        OpticsPlanet
        Vendor/Retailer
        • Apr 2009
        • 2129

        I think Leupold describes their rings as not needing to be lapped. However, I went ahead and lapped mine on a Savage 116. The bases were standard. Here is a blog I wrote on the experience:


        Chase B.
        CalGunners: Take 5% off your order of $50 or more at OpticsPlanet by using coupon code CALGUNS! Some exclusions apply.

        OpticsPlanet
        http://www.opticsplanet.com
        Toll-Free (888) 504-7864
        Send us a private message if we can be of help!

        Comment

        • #5
          Divernhunter
          Calguns Addict
          • May 2010
          • 8753

          You do not HAVE to lap the rings. It is better if you do. I have 1'' and 30mm kits if you want to come by and lap them.
          A 30cal will reach out and touch them. A 50cal will kick their butt.
          NRA Life Member, NRA certified RSO & Basic Pistol Instructor, Hunter, shooter, reloader
          SCI, Manteca Sportsmen Club, Coalinga Rifle Club, Escalon Sportsmans Club, Waterford Sportsman Club & NAHA Member, Madison Society member

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          • #6
            TruEdge
            Senior Member
            • Jun 2011
            • 1672

            Originally posted by OpticsPlanet
            I think Leupold describes their rings as not needing to be lapped. However, I went ahead and lapped mine on a Savage 116. The bases were standard. Here is a blog I wrote on the experience:


            Chase B.
            Nice write up chase. After seeing your first bit of lapping on the rings, what percentage of hold do you think the rings had before lapping?
            The laws that forbid the carrying of arms are laws of such a nature. They disarm only those who are neither inclined nor determined to commit crimes.... Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man." - Thomas Jefferson (quoting 18th century criminologist Cesare Beccaria)"

            Comment

            • #7
              jameshenry
              Member
              • Jan 2011
              • 327

              You don't want any misaligned rings for any caliber.

              Comment

              • #8
                OpticsPlanet
                Vendor/Retailer
                • Apr 2009
                • 2129

                Originally posted by TruEdge
                Nice write up chase. After seeing your first bit of lapping on the rings, what percentage of hold do you think the rings had before lapping?
                CalGunners: Take 5% off your order of $50 or more at OpticsPlanet by using coupon code CALGUNS! Some exclusions apply.

                OpticsPlanet
                http://www.opticsplanet.com
                Toll-Free (888) 504-7864
                Send us a private message if we can be of help!

                Comment

                • #9
                  TruEdge
                  Senior Member
                  • Jun 2011
                  • 1672

                  I guess I should say when you did you first check after a bit of lapping did it look as it was removing material evenly or was there some noticeable unevenness?
                  The laws that forbid the carrying of arms are laws of such a nature. They disarm only those who are neither inclined nor determined to commit crimes.... Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man." - Thomas Jefferson (quoting 18th century criminologist Cesare Beccaria)"

                  Comment

                  • #10
                    OpticsPlanet
                    Vendor/Retailer
                    • Apr 2009
                    • 2129

                    Originally posted by TruEdge
                    I guess I should say when you did you first check after a bit of lapping did it look as it was removing material evenly or was there some noticeable unevenness?
                    I would say by the time I was done it was fairly even. You need to evenly distribute the lapping compound on the rings to start, and set the ring screws to the same torque spec. The first torque spec I had on the rings was something like 5 in/lbs. Any more than that and I was unable to slide the bar. I progressively increased the torque equally to the point in which I could just get the bar sliding.

                    Chase B.
                    CalGunners: Take 5% off your order of $50 or more at OpticsPlanet by using coupon code CALGUNS! Some exclusions apply.

                    OpticsPlanet
                    http://www.opticsplanet.com
                    Toll-Free (888) 504-7864
                    Send us a private message if we can be of help!

                    Comment

                    • #11
                      mark501w
                      Senior Member
                      • Apr 2011
                      • 1699

                      I'd hardly call what I do lapping, snugg the top ring down & take a piece of wet or dry on my finger work in around knocking off the high spots inside.

                      Comment

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