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#3395263 - 10/09/13 02:03 PM Re: How Do You Measure MOA? [Re: MUP]
Hunter 257W
10 Point


Registered: 10/04/12
Posts: 3522
Loc: Franklin County

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 Originally Posted By: MUP
So my daughter shot two shots with her .243 yesterday at 100 yds. The ctc measurement was .375(scaled measurement, no calipers). Was this shooting 1/2 MOA then?


If the distance between the extreme shots is .375 inches @ 100 yards then that is not 1/2 moa. It's .375 (3/8) moa. You are measuring center-to-center. To base the accuracy on outside-to-outside would mean that a large bore gun would have to shoot tighter groups to measure the same as a smaller bore.


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#3396059 - 10/10/13 05:59 AM Re: How Do You Measure MOA? [Re: Hunter 257W]
MUP
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Registered: 08/01/07
Posts: 46480
Loc: Just North of Chatt-town

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I meant to type "sub" 1/2 MOA. ;\)
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Amateurs: Built the Ark

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#3396274 - 10/10/13 08:59 AM Re: How Do You Measure MOA? [Re: MUP]
mr.big
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Registered: 01/03/01
Posts: 28915
Loc: Copper Head Road

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shooting a target for a challenge on RFC and did the math on the target,,they require 4 single shots in the target to average and have actual bullet hole size instead of subtracting .223,,that number was .207,,then shoot 4 5 shot groups at 25 yards and measure outside to outside and subtract .207,,all 4 5 shot groups have to be under .250 to say your rifle will shoot 1/4 inch groups at 25 yards,,
the Model 4 will almost cut that in half,

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#3397030 - 10/10/13 07:14 PM Re: How Do You Measure MOA? [Re: mr.big]
wcsd462
4 Point


Registered: 11/17/06
Posts: 336
Loc: Wilson Co.

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I've been a lawenforcement sniper/ instructor for 12 years what I tell people as a quick reference, 100 yards is one MOA. One inch.
A moa at 200 yards is 2 in. So on and so fourth.
So if you shoot a group less that one inch at 100 yards you just shot a sub moa group. If you shoot less than a two inch group at 200 yards, you just shot a sub moa group at 200 yards. So on and so fourth. My experience is that people and instructors make MOA more difficult than it needs to be. What really will blow your mind is when you get out past 2000 yard.
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#3397516 - 10/11/13 05:04 AM Re: How Do You Measure MOA? [Re: wcsd462]
MUP
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Registered: 08/01/07
Posts: 46480
Loc: Just North of Chatt-town

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Thanks for explaining it that way wcsd462. ;\)
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MUP

Amateurs: Built the Ark

Professionals: Built the Titanic

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#3397766 - 10/11/13 08:39 AM Re: How Do You Measure MOA? [Re: MUP]
mr.big
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Registered: 01/03/01
Posts: 28915
Loc: Copper Head Road

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I thought he just wanted to know how to measure a group,,if he wants a full lesson on what moa is and how it relates to long range shooting we can start a new thread,,and then as long as your reticle and your adjustments match it is pretty simple,,I actually prefere moa adjustments with moa reticles in ffp as the mil/mil scopes,,but would rather have mil/mil as a scope with moa adjustments and mil-dot reticle,
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#3397797 - 10/11/13 08:52 AM Re: How Do You Measure MOA? [Re: mr.big]
MUP
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Registered: 08/01/07
Posts: 46480
Loc: Just North of Chatt-town

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Yep, just wanted to know about MOA measurement, to start with, but all this info is great. ;\)
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MUP

Amateurs: Built the Ark

Professionals: Built the Titanic

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#3400596 - 10/13/13 04:20 PM Re: How Do You Measure MOA? [Re: wcsd462]
redblood
16 Point


Registered: 01/22/06
Posts: 15381
Loc: Lewisburg

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 Originally Posted By: wcsd462
I've been a lawenforcement sniper/ instructor for 12 years what I tell people as a quick reference, 100 yards is one MOA. One inch.
A moa at 200 yards is 2 in. So on and so fourth.
So if you shoot a group less that one inch at 100 yards you just shot a sub moa group. If you shoot less than a two inch group at 200 yards, you just shot a sub moa group at 200 yards. So on and so fourth. My experience is that people and instructors make MOA more difficult than it needs to be. What really will blow your mind is when you get out past 2000 yard.



for quick reference that will work, although 2" at 200 yards is not quite a minute of an angle, nor is 3" at 300 or 4" at 400 yards
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#3401024 - 10/13/13 08:59 PM Re: How Do You Measure MOA? [Re: redblood]
wcsd462
4 Point


Registered: 11/17/06
Posts: 336
Loc: Wilson Co.

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 Originally Posted By: redblood
 Originally Posted By: wcsd462
I've been a lawenforcement sniper/ instructor for 12 years what I tell people as a quick reference, 100 yards is one MOA. One inch.
A moa at 200 yards is 2 in. So on and so fourth.
So if you shoot a group less that one inch at 100 yards you just shot a sub moa group. If you shoot less than a two inch group at 200 yards, you just shot a sub moa group at 200 yards. So on and so fourth. My experience is that people and instructors make MOA more difficult than it needs to be. What really will blow your mind is when you get out past 2000 yard.



for quick reference that will work, although 2" at 200 yards is not quite a minute of an angle, nor is 3" at 300 or 4" at 400 yards


Yes blood I know, that's why I said as a quick reference. Bench guys may worry about getting out the slide rule, but in my world and the world I was trained this works. Minute of head is really all we worry about. Thanks
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