Zeroing and then offsetting confusion

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aq_mishu

Member
Jul 31, 2022
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Cox's Bazar
Guys,
New to airgunning. Tried the level best to make the zero at 25Y. This means my scope turret crosshair is on POI=POA. Now, I'm totally confused on the MOA and other calculations. But here is my summery on MOA:
1 MOA = 1" per 100Y.

1) Does this mean if I zero at 100Y, then next 125Y (100+25) will be .25" below (POI)?
2) If #1 is correct, then I need to make adj of 1 click CC (counterclock) right?
3) What if I'm zeroed at 25Y and then how many clicks should I adj (CC or C) for a target at 100Y? [consider I don't know the POI yet]

Please note: I'm indoor, my scope is 1/4" per click,

I'm confused and my goal is basically to estimation on following conditions:
1) I know the estimated distance of target
2) I know my zero distance (@25Y)
3) I don't know how far pellet will drop as consider this is a hunting situation, not target practice where I can eval each POI vs POA

[edit: forgot to mention, I'm using .22 JSB Diablo Heavy. FX Maverick]

TIA

Mishu~
 
I dont even know where to start here to be completely honest but I'll try to help.

Download Chairgun on your phone and input your settings. That will give you a ROUGH calculation of drop at various ranges. From there just go setup targets at 5yd increments and just practice and take notes. Shooting is a game of repetition and experiences. There is no way to do it without tons of target practice.

As far as your scope goes, it sounds like aside from a very basic idea of how they work, you are essentially in the dark on what everything actually does. I would hit YouTube and watch as many "how does a scope work" videos as you can. MOA is an angular measurement as well so that will change depending on range. I'd look for videos describing that as well.
 
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Sqwirlfugger57 said:
I dont even know where to start here to be completely honest but I'll try to help.

Download Chairgun on your phone and input your settings. That will give you a ROUGH calculation of drop at various ranges. From there just go setup targets at 5yd increments and just practice and take notes. Shooting is a game of repetition and experiences. There is no way to do it without tons of target practice.

As far as your scope goes, it sounds like aside from a very basic idea of how they work, you are essentially in the dark on what everything actually does. I would hit YouTube and watch as many "how does a scope work" videos as you can. MOA is an angular measurement as well so that will change depending on range. I'd look for videos describing that as well.
Click to expand...
Well, the MOA calculation is confusing me... as said, 1MOA is 1"@100Y, 2"@200Y, etc... and my scope is 4click = 1MOA.

Now, as said before, if my scope is zeroed at 25Y, then one of the statistical result told me that at 10Y it's 1.75" below (POI is below POA). So here I already know the offset and hence I can correct 7click (If i'm not wrong) CC (as POI is negative) [let me know if I'm wrong here].

Now, when i'm zeroed at 25Y, if I fire at 50Y and POI is 1.5" below (example) then should I adjust for 6 clicks CC??

Note: here I know the POI and POA both...

[edit: since i'm indoor, i made this following:

10Y >> -1.75"
15Y >> -0.25"
20Y >> haven't tried
25Y >> ZEROED
30Y >> -0.25"

after than I couldn't due to space
 
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aq_mishu said:
Well, the MOA calculation is confusing me... as said, 1MOA is 1"@100Y, 2"@200Y, etc... and my scope is 4click = 1MOA.

Now, as said before, if my scope is zeroed at 25Y, then one of the statistical result told me that at 10Y it's 1.75" below (POI is below POA). So here I already know the offset and hence I can correct 7click (If i'm not wrong) CC (as POI is negative) [let me know if I'm wrong here].

Now, when i'm zeroed at 25Y, if I fire at 50Y and POI is 1.5" below (example) then should I adjust for 6 clicks CC??

Note: here I know the POI and POA both...
Click to expand...
Thats the angular portion of the equation. Because at 10yds, 1 click moves the reticle .025" (notice the extra zero). You will need 70 clicks to move the turret 1.75" at 10yds. At 50yds, 1 click would equal .125". At 200yds 1 click will move the turret .5"
 
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1/4" = 0.25" was my calculation... damn me!!! it was supposed to be 0.025"

If I keep zero at 25Y and then take a shot at 10Y and measure and count how many clicks it needs to be zero at 10Y, my confusions should be clear right? and then similarly some other calculations...

BTW, is there any chart for "JSB diablo heavy" ballistics? I mean the trajectory curve at different distances?
 
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aq_mishu said:
50Y was a "for the example" figure... since it's small figure, I used... :p
Click to expand...

Yes and no. At 50 yds you are only dealing with a few inches of arch. It's easier to just know your holds. From 50 and beyond I MAY dial my scope but generally speaking, I just hold over in reticle and leave the turrets alone to a certain point. I know my turret settings for 50, 75, 100, 125 and 150yds. Depending on the scenario I will dial to one of those settings and then just hold over or under based on what I'm dealing with.

At 150yds, my scope is basically maxed out without changing my mount configuration. No big deal because I can still hold an additional 10 MIL in my reticle which will allow me to hold over out to about 220yds accurately.
 
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Sqwirlfugger57 said:
Yes and no. At 50 yds you are only dealing with a few inches of arch. It's easier to just know your holds. From 50 and beyond I MAY dial my scope but generally speaking, I just hold over in reticle and leave the turrets alone to a certain point. I know my turret settings for 50, 75, 100, 125 and 150yds. Depending on the scenario I will dial to one of those settings and then just hold over or under based on what I'm dealing with.

At 150yds, my scope is basically maxed out without changing my mount configuration. No big deal because I can still hold an additional 10 MIL in my reticle which will allow me to hold over out to about 220yds accurately.
Click to expand...
well, seems a phd for me...

BTW, yep, i still need a lot of practice and actually i was just trying to understand the scope and how it works in terms of ballistics, adjustments, etc... :p
 
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aq_mishu said:
well, seems a phd for me...

BTW, yep, i still need a lot of practice and actually i was just trying to understand the scope and how it works in terms of ballistics, adjustments, etc... :p
Click to expand...
Just go out and shoot a lot man. It will all start to "click" for you in no time. This is one of those hobbies where practicing is almost as fun as the actual game. Good luck!
 
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