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What is MOA?


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Old 09-09-2011, 03:05 AM   #11
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Subtension. That's a new word for me!
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Old 09-21-2011, 05:32 PM   #12
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Quote:
Originally Posted by TCH2FLY View Post
Nicely done, but I do have an issue with this:

I know this comes off as nit picky but technically they are not close or even similar. An inch is a linear measurement and MOA is an angular measurement that is actually dimensionless.

An inch (or foot, meter, etc) measures exactly the same amount of distance at all times, a stick measuring one inch is the same length regardless if it is right in front of you or one mile away.
One MOA is an angular measurement that subtends to approximately one inch at 100 yds but as you point out it also subtends to TWO inches at 200 yds, three inches at 300 yds, etc. so it's "value" is always based on distance.

What is MOA? - Optics & Mounts
I wondered if somebody was going to point this out.
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Old 09-21-2011, 06:12 PM   #13
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Quote:
Originally Posted by TCH2FLY View Post
I know this comes off as nit picky but technically they are not close or even similar. An inch is a linear measurement and MOA is an angular measurement that is actually dimensionless.
yeah it kinda was the wording may have been technically wrong, but was the explanation correct? Would a person who has no knowledge of the concept beforehand be reasonably expected to understand the concept as explained?

That said, hey I learned something. I've understood it these years in the same simple way that Canebrake explained.
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Old 09-21-2011, 09:24 PM   #14
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Quote:
Originally Posted by neilage66 View Post
I always have to think harder for scope/sight adjustments for ranges under 100 yards/meters.

Ex: How many clicks of a 1/4 minute sight to move POI 5 inches @ 25 yards?

...thinking...

25 yards that is 20" at 100 yards! Here is ballistics calculator that will help at distance. Pick your bullet, velosity, wind........

JBM - Calculations - Trajectory
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Old 09-21-2011, 10:38 PM   #15
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CANE!

Great Post! Vert well explained!

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Old 09-21-2011, 10:44 PM   #16
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Sticky anyone?
Thanks. This is great info in an easy format.
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Old 09-25-2011, 02:56 PM   #17
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Nav Great question , was wondering the same thing. Cane thanks for the education!! Pat C.
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Old 03-30-2012, 08:08 PM   #18
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OK what is 1,2,3,4,5 moa on a dot scope, I know it is the size of the dot but how does that figure in to the ever changing size at different distance's.

Just another dumb hillbilly

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Old 03-31-2012, 01:18 AM   #19
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A red dot scope that is 4 MOA has a dot that would cover a circle that is 4 inches in diameter when viewed at 100 yards.
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Old 05-26-2012, 03:47 PM   #20
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man that is confusing, thank god for 30 round magazines.
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