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What is MOA?

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Old 12-31-2013, 01:17 PM   #21
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Originally Posted by c3shooter View Post
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.
So can I assume that a red dot sight rated at 3.5 MOA would be better (more accurate) than a red dot sight rated at 7.0 MOA?

I have a S&W M&P 40 CORE Pro Series that I am looking to put a Leupold Deltapoint Red Dot sight on. They have 2 versions, a 3.5 MOA version and a 7.0 MOA version for exactly the same price. I take it that the 3.5 MOA version is better? Given that they are the same price, is there any advantage to the 7.0 MOA version? If not, why would anyone ever buy the 7.0 MOA version?

The purpose for the gun will be competitive use. Steel Challenge, USPSA, 3-Gun etc...


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Old 12-31-2013, 01:35 PM   #22
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Speed at close range. Small dots are hard to pickup quick. Dots of all sorts are difficult to use quickly and accurately at much past 75m.

A lot of competition types are going to 1-4 and 1-6 scopes rather than red dots. When your shooting 100 200 300 and up to 600 in competition your red dot optics are worse than iron sights
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Old 12-31-2013, 02:18 PM   #23
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Darn Canebrake, I was going to tell him it was a Canadian cow. Your Sticky on it is a great reference. "MOA is not a Canadian cow" by Canebrake.
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Old 12-31-2013, 03:16 PM   #24
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Here ya go...if you want it.
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Old 02-25-2014, 03:07 AM   #25
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Might help in understanding
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Old 09-17-2016, 06:42 PM   #26
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To Cane's informative answer I would add that 1 MOA is 1/60 of 1 degree so 1/4 MOA is 1/240 degree. A 1/8 MOA adjustment would only be valuable at very far distances. 1/4 MOA is strictly 1.047"/4 per 100 yards * 1,000 yds = 2.6". So if you need to be closer than +/- 2.6" at 1,000 yards (and have the ability to do it) you will need 1/8 MOA. I don't recommend it.
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