To shim or not to shim

Home Forums General Optics/Nightvision To shim or not to shim

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  • #1408
    shaky
    Participant

    Because a lot us use a tri rail, and often a 1-pc scope mount, …….is
    “shimming” a viable alternative to using up one’s vertical adjustment to zero a scope? It sounds practical. But as they say, a little knowledge is a dangerous thing. And the extent of my knowledge on the matter, I’ve just shared with you.

    Are there any “cons” to shimming?

    #32668
    rob3dr
    Participant

    Shimming is just fine and easy to do on a PCP… use some film negatives…

    on a springer, it isnt nearly as viable due to the recoil. Only downside to shimming is you really dont want to do too much as you can warp the scope tube. I’d shim a cheaper scope, but the pricer ones… no way. Just spring for drooper mounts or adjustables.

    #32672
    walkonking
    Participant
    quote rob3dr:

    Shimming is just fine and easy to do on a PCP… use some film negatives…

    on a springer, it isnt nearly as viable due to the recoil. Only downside to shimming is you really dont want to do too much as you can warp the scope tube. I’d shim a cheaper scope, but the pricer ones… no way. Just spring for drooper mounts or adjustables.

    You know what is funny to me? Bushnell included a chart on how much to shim your scope and how thick the shims should be. I have never gotten that with a scope before. And if the Legend needed to be shimed I would have had Tim McMurry do his drooper thing on my mount instead.

    To much of a shim and the scope can be kinked.

    #32673
    shaky
    Participant

    Guess I’ll put that idea to bed, huh.

    Thanks for the education!

    #32752
    riffraff
    Participant

    I didnt think you were talking about shimming inside the scope rings, I thought you meant the mounting wedges.

    If you are shimming the wedges, go ahead and shim away you cant hurt a thing. You can easily shift the POI left or right this way. Not so easy to shift up and down but still do-able.

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