What can be done to correct a side focus that…

Forums Optics, Scopes, Rings, & Mounts What can be done to correct a side focus that…

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    Bigragu
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    … doesn’t match up with different distances called out by your rangefinder? 

    Thank you, all

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    Funshine
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    Bigragu, I believe that when the scope is not properly setup that can be more prevalent. First make sure the diopter (eye piece) is properly focused with the reticle. You may also have to center the scope, too. A best bet is to look at some pro scope setup procedures on You Tube. Good luck.

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    Gerry52
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    I'm gonna put a homemade knob tape on mine & mark the CORRECT yardage on the tape using my range finder to verify. Don't think ANY of my scope knobs will ever be correct otherwise. I think each individual's visual acuity enters into it too so I never expect them to be "spot on". Tank is coming to you this week Augie! Just got my new one hydro'd today & will be emptying old tank on Friday, maybe before. 

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    Bigragu
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    Thanks a bunch, Gerry. Looking forward to it. Let me know the shipping cost and I’ll send it to you.

     

    on a scope of mine, I know to my back fence it’s exactly 31 yards, no more, no less, but on my side focus it’s reading at about 50 yards. My scope was 100% optically centered prior to mounting, and I am very precise when it comes to mounting scopes, and step one is to always focus my ocular to my eye before any scope mounting takes place. 

    Heres one for you all- do you find front objective adjustment scopes to be more accurate in yardage focus than side focus scopes? I’m pretty good at estimating distance(been around football fields a lot, along with working on commercial buildings in construction). When I go on walks around a park I add to the boredom by carrying my range finder to check my guesstimating on distance call outs to trees, buildings, etc.

    When I have a target out to shoot, the old Vortex Diamondback with the front objective focus is so easy to turn to range, and 99% of the time when I shoulder that rifle the image is crystal clear. With the side focus, I’m losing confidence in my guesswork, along with having to take more time dialing into focus. 

    I guess I was hoping stupidly that maybe, like a scope turret that can be raised up to reset to zero, maybe a side focus knob could be reset somehow to proper distance focus. 

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    2D1C
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    I was able to take the turret off then repositioned it. Worked great!

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    Bigragu
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    2D1C

    I was able to take the turret off then repositioned it. Worked great!

    2D1C, which scope did you do that to? Was there by chance an illuminated reticle button on top of the side focus? That’s what I’m dealing with. What about purging out the nitrogen? Any chances of that happening? 

    Very interested if you don’t mind explaining the procedure,  thank you.

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    c_m_shooter
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    What you are seeing with your scope is normal.  That is why Field target shooters put oversized wheels on their scopes  with tapes marked with their own yardages.

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