Scope zero weather/data in Strelok Pro question.

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Chuck26287

Chuck26287

Member
Jul 29, 2018
256
19
Indiana, United States
I'm confused about the Strelok Pro data input for when the scope was zeroed. Is there no wind speed and direction input for the scope zeroing conditions? Or, am I just stupid to consider zeroing with a minor wind speed and direction in play? I see where and how to input the weather (I'm linking to a Kestrel 5700), but have no idea if or where I put in the wind data applicable when I zeroed the scope. I had ~8 mph at -35 deg according to the Kestrel when I zeroed. If I then take a shot after this zeroing, with the same 8 mph wind, it shows I need to hold over for that wind, where that should be a zeroed crosshair shot. It obviously does not know I had that 8 mph wind when I zeroed. Is this where you would enter a Zero Offset value for the wind you had during the zeroing?

Any help is appreciated.
 
Well, if I calculate for a shot with an 8 mph crosswind at -35 degrees (my zeroing conditions) my elevation is right on as would be expected, but the windage says hold left by 0.7 MRAD. That is obviously how much my wind affected my zeroing, so if I enter that as my Zero Offset Horizontal value (I entered -0.7), then go back and calculate a shot with the zeroing wind conditions, it shows both elevation and windage zeroed. This is exactly what Id expect to see for shooting in the same conditions as I zeroed in... a zeroed reticle.

If I then calculate a shot with NO wind, my shot will be off in windage by the amount I adjusted for the wind by when I zeroed. It does indeed show no wind as a hold right by the same 0.7 MRAD.

This seems to be my answer, but I'm not sure this is the true purpose of the Zero Offset values. Am I still ignorant?
 
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I'm pretty sure the zeroing offset has to do with when you can't get an absolute zero on the turret.

Like when your shot is high and you dial one click down and then your shot is low. So you need a half click......I think that's what the offset is for.

As far as wind while your zeroing, how about dial for the wind according to Strelok, but then zero out the turret when your done zeroing. This way your always working from a zeroed turret, as if you zeroed with no wind?
 
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I'm pretty sure the zeroing offset has to do with when you can't get an absolute zero on the turret.

Like when your shot is high and you dial one click down and then your shot is low. So you need a half click......I think that's what the offset is for.

As far as wind while your zeroing, how about dial for the wind according to Strelok, but then zero out the turret when your done zeroing. This way your always working from a zeroed turret, as if you zeroed with no wind?
Click to expand...

I don't follow you... if I zeroed with an 8 mph wind, then I'm on my zero with an 8 mph wind, and I don't want to dial in any wind correction according to Strelok Pro for an 8 mph wind, or I'll go off my zero, regardless of where the turret reads zero (although I did zero the turret caps once I had zeroed the scope). The problem seems to be that Strelok seems to believe I had no wind when I zeroed. Without using the Zero Offset value, I see no way to tell Strelok I have already zeroed out that 8 mph wind. I would also think you could still further adjust the offset value by any amount required to adjust for falling between clicks, as the total offset would be cumulative. For example, you could offset by -0.7 MRAD for the wind during the zeroing, then by +0.05 for the fall between clicks, for a total offset input of -0.65.

My guess is most people zero in no wind conditions, but sometimes you can't. I'll re-zero as soon as I can in no wind conditions and make this all a mute point, but it's a good understanding to have.
 
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The zero offset is for using multiple loads. Example : Your main pellet is an 18 gr. JSB so you zero for the 18 gr. JSB but you use a 13 gr. JSB for certain types of shooting or conditions. If the 13 gr. pellet hits 2" higher and 1" left with your scopes zero set for the 18 gr. pellet you would put that in the offset. This allows you to switch between the two loads and have the ballistic app calculate your data for you for the proper hold over and hold off for the alternate load. Some people prefer to just make up a second dope card with the same info the ballistic app will provide for the second load. Either way works but you have to get the correct data entered or it will be off.

If you have to zero in wind then you just put the zero for whatever the hold off needs to be. If the ballistics app says you should have 3" of drift at your zero distance then when sighting in your groups should be 3" off. When its not windy you can double check your zero in case you had the wrong wind value.
 
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The zero offset is for using multiple loads. Example : Youre main pellet is an 18 gr. JSB so you zero for the 18 gr. JSB but you use a 13 gr. JSB for certain types of shooting or conditions. If the 13 gr. pellet hits 2" higher and 1" left with your scopes zero set for the 18 gr. pellet you would put that in the offset. This allows you to switch between the two loads and have the ballistic app calculate your data for you for the proper hold over and hold off for the alternate load. Some people prefer to just make up a second dope card with the same info the ballistic app will provide for the second load. Either way works but you have to get the correct data entered or it will be off.

If you have to zero in wind then you just put the zero for whatever the hold off needs to be. If the ballistics app says you should have 3" of drift at your zero distance then when sighting in your groups should be 3" off. When its not windy you can double check your zero in case you had the wrong wind value.
Click to expand...

This is the correct use of offset
 
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Yes you could re zero. Using the apps off set allows you to skip re zeroing and switch at any time and have the app know exactly where the other load will hit and calculate the adjustments for you. Zero offset can be used for multiple types of scenarios two being different loads or bullets and shooting with a suppressor on and off since that changes most rifles poi. Heres a video link that just barely touches on the subject. Theres more info out there on the subject.

https://www.youtube.com/watch?v=VR86DeHZrNM
 
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