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 09-09-2011, 03:05 AM | #11 | Happy Kahr Family! Join Date: May 2009 Location: Portland, Oregon Posts: 1,904 |
Subtension. That's a new word for me! __________________
.45 acp, 9mm, .38 spl +p, .380 acp, .22 long rifle
12 gauge, 5.56x45mm NATO, .30-30 Win
1 Peter 3:15-16 "But in your hearts set apart Christ as Lord. Always be prepared to give an answer to everyone who asks you to give the reason for the hope that you have." | 
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| 09-21-2011, 05:32 PM | #12 | Junior Member Join Date: Feb 2009 Posts: 12 |
Quote:
Originally Posted by TCH2FLY
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.
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I wondered if somebody was going to point this out. __________________
The Older I Get....The Better I Was... | |
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| 09-21-2011, 06:12 PM | #13 | Supporting Member Join Date: Feb 2011 Location: Calhoun, Louisiana Posts: 6,212 Liked 3 Times on 3 Posts
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Quote:
Originally Posted by TCH2FLY
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.
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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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| 09-21-2011, 09:24 PM | #14 | Iron Man Join Date: Apr 2007 Location: South central, NH Posts: 3,262 Likes Given: 2
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Quote:
Originally Posted by neilage66
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...
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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__________________
Freedom is not free. The best of us always leave too soon. | |
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| 09-21-2011, 10:38 PM | #15 | Supporting Member Join Date: Jun 2010 Location: , Tennessee Posts: 2,040 |
CANE!
Great Post! Vert well explained! 
03 | |
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| 09-21-2011, 10:44 PM | #16 | Senior Member Join Date: Feb 2008 Posts: 424 |
Sticky anyone?
Thanks. This is great info in an easy format. | |
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| 09-25-2011, 02:56 PM | #17 | Member Join Date: Jul 2011 Location: CedarFall, IA. Posts: 44 |
Nav Great question , was wondering the same thing. Cane thanks for the education!! Pat C. | |
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| 03-30-2012, 08:08 PM | #18 | Supporting Member Join Date: Feb 2012 Location: Buckhannon,, WEST VIRGINIA Posts: 6 |
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
Randy | |
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| 03-31-2012, 01:18 AM | #19 | Moderator Join Date: Feb 2008 Location: Third bunker on the right, Central Virginia Posts: 8,376 Liked 5 Times on 5 Posts
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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. __________________
What we have heah is.... failure to communicate. | |
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