MOA
what does MOA stand for?
I Think it has something to do with group size but I`m not sure.
Thanks.
I Think it has something to do with group size but I`m not sure.
Thanks.
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I think I have heard that in shooting "MOA" means, Minute of Angle.
Will one of you knowledgeable people please explain this term and why is it a better description of placed shots than used years ago. Also how long has it been in use. Please be specific with your replies as I wish to print out the replies for keeping. Thanks
Dr. J. Curtis Lane0 -
A minute of angle accuracy is way of standardizing accuracy terminology. One minute is one minute at all distances. Now having said that, as you could imagine a minute of angle (arc area) near you would be very small, then as distance from you increases a given arc area will increase. For example @ 100yds - a minute of angle (arc area) is approximately 1 inch in diameter, @ 200 yds - it is about 2 inches, @ 300yds - it is about 3 inches, and so on at all distances from you. However, even though the point of impact area is getting larger with distance, it is still only 1 minute of angle accuracy. Hopes this helps. (BTW, 1 minute of angle is so very close to 1 inch at 100 yds that these terms are sometimes used interchangeably.)
Boomer
"Success is to be measured not so much by the position that one has reached in life as it is by the obstacles which one has overcome while trying to succeed."<p>NRA Life Member0 -
poof 0 -
jc40,
This topic came up in December and some good info was posted at that time. Here's the link to that previous thread:
http://forums.gunbroker.com/topic.asp?TOPIC_ID=41826
Close to God, far away from everyone else.0 -
Queeksdraw, There are 360 degrees in a circle (think of a compass). There are 60 minutes to a degree (and 60 seconds to a minute if your going to split hairs).
1 MOA is equil to 1.046" at/per 100 yards increment (1 inch is close enough for us common folks).
The older methiods (the "string" methiod) used the total of the distances from the aiming point to each bullet hole, so a rifle that fired a 6" group centered on the aiming point was considered better than one that shot a 1" group that was 4 inchs away from the aim point.
Groups are measured from center to center (measuring from outside to outside and subtracting 1 bullet diameter yeilds the same number, and is easier to do).
A rifle that consistantly shoots 1 MOA (and is adjusted to the point of aim) will place every shot within 1/2" of the aim point. (shooter error not included)
Some guys like a mag full of lead, I still prefer one round to the head.0 -
MOA- A unit of angular measurement equal to 1/60th of a degree. Usually approximated as 1" (actually 1.0472") at 100yds, 2" at 200yds, ( 2.0944")etc.
Just like tailgunner1954 said......
I'm a man,....but I can change,.....If I have to,......I guess.0 -
OK let me see if I got this each degree of ang. has 60 MOA and each MOA has 60 seconds of ang. So the dif, between 1 degree and 2 degree is 60 min.
Rusticwater I went to the link and then the link within the link and read the whole thing thanks for the pass along I think I got it.
Thanks tailgunner also.
You'v gota kill it to grill it0 -
jc40, what it all boils down to is 1" at 100 yards is 1 minute of angle. 2" at 200 is 2 minutes of angle. Yes, there's math, not arithmetic, involved, but for most of us, it's 1" at 100 is a minute of angle rifle. This, depending on the calibre, means that at 1,000 yards, you get a 10" group. It's really only important for long range target shooters and military snipers. Neither of these type of shooters use regular rifles. They use heavy, custom, match grade barrels with finely tuned triggers, custom loaded ammo(that you can make if you reload) and top notch sights. 0 -
Gentlemen, Thanks to you all. I have copied entirely, including the references. I am very greatful that this site is available.
Dr. J. Curtis Lane0
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