Formula to convert inch’s to moa

[Buster Hemlock]

It's important to point out that the .047 will eat guys alive at distance if your ignoring it. A simple example of this is my load for 300 win drops 241"@1000 yards. If you stick with 1"=1moa then you come up with 24.1moa in elevation adjustment. Now if you use 1.047 you get 23moa. So you now over compensated by 1.1moa which 1.1x1.047x10(for 1000 yards) =11.5" high of your target if you stuck with 1"=1moa

 

[KyCarl]

That's why I like my USO scope. It's graduated in IPHY not MOA.
So at 100 yards 4 clicks is 1 inch exactly. And it really does work!

 

[Buster Hemlock]

That's why I like my USO scope. It's graduated in IPHY not MOA.
So at 100 yards 4 clicks is 1 inch exactly. And it really does work!

In your case with a IPHY scope you are right, a inch is a inch but a inch is not a MOA and that's what the OP asked about and telling him you can ignore the .047" will give him issues as he progresses to shooting farther.

 

[jebel]

FYI, if you want a simple spreadsheet formula to convert inches at a given yardage to MOA without having to remember the exact size of 1 MOA at 100 yards (1.047198), you can use the following. (This is the format in Excel.)

=DEGREES(your-measurement-in-inches)/60/(yardage-measurement-was-taken/100)

For example, if you measured a 2.75" group at 350 yards, your Excel formula would look like this:

=DEGREES(2.75)/60/(350/100)

And the result would show that your group was 0.75 MOA.

 

[Edd]

I just want to convert my group size from inches to MOA.

your group size in inches x 95.51 ÷ yards to target = MOA

 

[redleg1013]

Multiply or divide 1.047 as applicable.
1 true MOA = 1.047"
Taken from Snipers Hide:

"Nothing worse than dialing up then having to mathematically figure the error.

For ranging out to 1k you'll note there is only .47" difference in moa vs. iphy/smoa. But when you start dialing it, that 5% difference really adds up. To the tune of 16-20" @ 1000 yds., depending on what round you are shooting.

So if your calculations are in mils and you dial up in mils with no error, just follow the numbers and hit it. Same with iphy and same with moa.

The only issue I can see is with iphy, you don't start with a relatively rounded number as far as angular measurement. That's if you have to start completely from the beginning. In moa it's 1/60 => sin => x 3600(inches in 100 yds) But, if shooting metric you then need to convert metric to yds. And that is a pain in itself all over again (military maps are metric...sometimes we have to range that way)."

 

[Elk Hunter 338]

Everything on the internet shoots 1/2 moa so just say that...or if it's a Creedmoor go with "in the .1's all day"...

LMMFAO!!!!!!

 

[Swiftkill]

Or, use the 10 shots 1 kill method of guestimating! LOL

 

[Buster Hemlock]

Michael you must be following the thread how not to use a 6.5 creedmoor. Lol
https://www.longrangehunting.com/threads/how-not-to-use-a-6-5-creedmoor.217603/

 

[theosmithjr]

A Minute of Angle (MOA) is an angular measurement.

A MOA is 1/60th of a degree.

1 MOA spreads about 1″ per 100 yards. (actually 1.047″)

1 MOA is a different size at different distances, 8″ at 800 yards is still just 1 MOA.

100 yds 200 yds 300 yds 400 yds 500 yds 600 yds 700 yds 800 yds
1″ .........2″......... 3″........ 4″........ 5″........ 6″........ 7″........ 8″

 

[theosmithjr]

You need to either TRAIN YOUR BRAIN for one or the other. Fast, real life shooting leaves little time for calculations. Make it EASY on yourself, stick with MOA. You should. KNOW your load and where it's at to at least 1,000 yards ifn you are a SHOOTER.
Theosmithjr

 

[adam32]

This thread has turned beyond complicated...the OP wanted to know how to take his group size in inches to minutes, that's all. It's been answered as simply as possible a few times.

 

[FEENIX]

This thread has turned beyond complicated...the OP wanted to know how to take his group size in inches to minutes, that's all. It's been answered as simply as possible a few times.

Yep!

 

[User4302021]

Another example: 523 yards, 8.5 inch group

Multiply 1.047 (1 moa at 100 yards) by yardage in hundreds to get 1 moa at that distance (523 yards=5.23 hundreds):

1.047 inches x 5.23 hundreds = 5.47 inches is 1 moa at distance.

Divide group size in inches by moa at distance:

8.5 inches / 5.47 inches = 1.55 moa