Canted base's effect on angle sine indicators

Discussion in 'Long Range Scopes and Other Optics' started by dust, Oct 15, 2012.

  1. dust

    dust Well-Known Member

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    Was looking at the different ASIs, from the Horus Vision which seems hit and miss on the site, to the Flatline OPS or the Defensive Edge one. But before getting to that part, I have to ask what part a canted base will play in rendering the ASI inaccurate? I don't know the math to figure it out, hence I am asking those that know more than me. Looking at it for a .22LR that will get a 25-50 MOA base for the Best of the West range. I know it might not be that useful, but I think that it's help in learning what's going on in the mechanics will make it worthwhile.
     
  2. davewilson

    davewilson Well-Known Member

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    a 30 moa base is one half of one degree. in the overall scheme of things, i would put it in the BFD classification!
     

  3. KRP

    KRP Well-Known Member

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    1 degree = 60 MOA

    Is the resolution of the device you're considering fine enough to read <1degree?
     
  4. dust

    dust Well-Known Member

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    That's the thing, I don't own any of them yet. I was just wondering if it would be as simple as offsetting, or if any of them could be adjusted, etc.
     
  5. davewilson

    davewilson Well-Known Member

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    i don't think the base angle matters at all. it's the line of sight through the scope compared to gravity and the horizontal distance.
     
  6. robert6715

    robert6715 Well-Known Member

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    My Flatline Ops is totally adjustable.You level the bore,then adjust the ACI to level.

    Rob
     
  7. kcebcj

    kcebcj Well-Known Member

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    I agree with Dave. With the line of sight through the scope level set the ACI level.
     
  8. marinetowgunner

    marinetowgunner Well-Known Member

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    All of the indicators I've used are adjustable. Zero it out and drive on.