MOA ?

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Twiceshy

Twiceshy

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Oct 19, 2024
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Porter County, IN. USA
If I am understanding correctly, MOA is equal to 1 inch at 100 yards. So, when setting a scope at 100 yards the squares on the target are 1 inch and thus let you know how many clicks to turn the scope adjustments. So, in my case I am setting my scope to 25 yards. (Due to poor eyesight) even at this close range in order for me to see the small target/pest I have to use a scope. So, should I perhaps use graph paper with 1/4-inch squares as a sight in target to make the adjustments? Still trying to get a tight 5 shot group smaller than a dime. A steady shooting platform I am sure would help also.

Thanks for your feedback.
 
Twiceshy said:
If I am understanding correctly, MOA is equal to 1 inch at 100 yards. So, when setting a scope at 100 yards the squares on the target are 1 inch and thus let you know how many clicks to turn the scope adjustments. So, in my case I am setting my scope to 25 yards. (Due to poor eyesight) even at this close range in order for me to see the small target/pest I have to use a scope. So, should I perhaps use graph paper with 1/4-inch squares as a sight in target to make the adjustments? Still trying to get a tight 5 shot group smaller than a dime. A steady shooting platform I am sure would help also.

Thanks for your feedback.
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You are correct. Your scope turrets probably say 1/4 moa per click, if thats true. At 100 yards 4 clicks will move your reticle approximately 1 inch. At a 50 yard zero, one click is 1/8" . At a 25 yd zero one click will be 1/16". So to move the reticle 1/4" @ 25 yards you need 4 clicks.
 
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Dstrac said:
You are correct. Your scope turrets probably say 1/4 moa per click, if thats true. At 100 yards 4 clicks will move your reticle approximately 1 inch. At a 50 yard zero, one click is 1/8" . At a 25 yd zero one click will be 1/16". So to move the reticle 1/4" @ 25 yards you need 4 clicks.
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Thank you, that helps a lot and explains why when I adjust by 1 or 2 clicks not much of a change is happening. Was beginning to think I was going the wrong way or have a scope issue.
 
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Twiceshy said:
If I am understanding correctly, MOA is equal to 1 inch at 100 yards. So, when setting a scope at 100 yards the squares on the target are 1 inch and thus let you know how many clicks to turn the scope adjustments. So, in my case I am setting my scope to 25 yards. (Due to poor eyesight) even at this close range in order for me to see the small target/pest I have to use a scope. So, should I perhaps use graph paper with 1/4-inch squares as a sight in target to make the adjustments? Still trying to get a tight 5 shot group smaller than a dime. A steady shooting platform I am sure would help also.

Thanks for your feedback.
Click to expand...

Welcome to the rabbit hole! There are a few variables that can affect your scope. The good news is there are a lot of videos on youtube that cover this very topic!

Try this video, it should get you in the right direction.


Have fun!
 
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Twiceshy said:
If I am understanding correctly, MOA is equal to 1 inch at 100 yards. So, when setting a scope at 100 yards the squares on the target are 1 inch and thus let you know how many clicks to turn the scope adjustments. So, in my case I am setting my scope to 25 yards. (Due to poor eyesight) even at this close range in order for me to see the small target/pest I have to use a scope. So, should I perhaps use graph paper with 1/4-inch squares as a sight in target to make the adjustments? Still trying to get a tight 5 shot group smaller than a dime. A steady shooting platform I am sure would help also.

Thanks for your feedback.
Click to expand...
This may help.


One MOA Calculation (Note, MOA = minute of angle).
This is how you can determine the one MOA for any target.
  • Determine the distance or range to this target.
  • Convert this number to inches or centimeters for metric.
  • Double this number. (Diameter of a circle at this target distance or range).
  • Use Pi, 3.14159265 times the number in step 3. (Circumference of a circle is Pi x D).
  • Divide this number by 21,600. (Note 21,600 is the number of minutes in a circle, 360 degrees times 60 minutes in one degree).
This number is the one MOA in inches, or centimeters if used, for this distance or range to the target. (Group shots are measured center to center).
Example:
  • 100 yards to target.
  • 100 times 3’ times 12” equal 3600” to the 100 yard target.
  • 3600” x 2 equal 7200”. (Diameter of 100 yard circle in inches).
  • Pi 3.14159 times 7200” equal 22,619.448”. (Circumference of 100 yard circle).
  • 22,619.448” divided by 21,600 = 1.04719”. (One MOA at 100 yards in inches).
This number is usually rounded to 1” for one MOA at 100 yards. The one MOA equal 1” is an ARC measurement and not a straight line as it is a very small section, 1” of the overall circle circumference at 100 yards.

A trivia note, one MOA on the moon is about 69.5 miles, or 111.85 Kilometers! (238,900 miles, 384,472.28 Kilometers to the moon).
Also lots of excellent scope info at this site.
https://www.rimfirecentral.com/thre...ounts-super-sticky-questions-try-here.496141/
 
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you don't have to use a grid per se..... i just set up a very large blank sheet of paper and draw one dot on it for my target...that dot will be the reference for all the subsequent shots.

then fire one shot, and that hole is your reference....then I rotate the turret 4 clicks up and shoot a round, then another 4 clicks right and shoot a round, then 4 clicks down and shoot a round....and finally 4 clicks left and shoot a round.

If your rifle scope is tracking well your first and last shots should hit the same point....and you can easily measure the spacing between each hole to confirm quality of settings.

basically you just shot 4 corners that define a square
 
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