Rifle Scopes Mil/MOA

[mshaner]

I've searched for the last hour to find info that provides an answer to my question but to no avail...sorry if there's duplication, but can't seem to find it:

I have one scope that is Mil/MOA configuration that I need to make darn sure I understand so that I can 'dial in' my elevations. I have used the hold-over method, but would like to broaden my brain power just a bit.

What is the calc for getting to the number of clicks needed to adjust for bullet drop on a mil/MOA scope? <span style="text-decoration: underline"><span style="font-weight: bold">Knowns:</span></span> Distance (500 yards), bullet drop (say for sake of calculation that I have 20 inches of drop), elevation knob @ 1/4MOA @ 100 yards.

Thanks.

Shane

 

[xdeano]

Re: Mil/MOA

20 inches ~ 20 moa up. or if your going on clicks just multiply by 4, 80 clicks.

xdeano

 

[Dagsta]

Re: Mil/MOA

Do yourself a favor, sell it and get a scope w matching reticle and knobs. You'll be glad u did

 

[TOP PREDATOR]

Re: Mil/MOA

the better google search:

http://www.google.com/cse/home?cx=010955838166721108978:qcbx5qqy10o&hl=en

type in moa/mil or mil/moa and you get an overwhelming amount of information.

try "mil/moa conversion" too

 

[mshaner]

Re: Mil/MOA

All my other scopes match up. This is the only one I have that doesn't match.

Shane

 

[sniperaviator]

Re: Mil/MOA

At 100 yards each moa of elevation is going to move the bullet 1" in elevation.
At 500 yards each moa of elevation is going to move the bullet 5" in elevation. So for 20" you need 4moa.

One Mil equals 3.44 moa
One moa is actually 1.047" of drop for every 100 yards (frequently rounded to 1" as in above example).

So if you need 2 mils of elevation (as read on your reticle) then you need 6.88 rounded to 6.75moa on your elevation dial.

Hope that helps.

 

[maladat]

Re: Mil/MOA

Get a mildot master. It ranges based on a mil reticle and converts inches drop/windage to mil and moa corrections at that range.

 

[ChadTRG42]

Re: Mil/MOA

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: xdeano</div><div class="ubbcode-body">20 inches ~ 20 moa up. or if your going on clicks just multiply by 4, 80 clicks. xdeano </div></div>NO! 20" of drop at 500 yards does not = 20 MOA. It would at 100 yards, but not at 500.

To the OP- plug in your ammo information in JBM calculator. Have your elevation in MOA and your wind in mils (if you plan to hold for wind). If you plan to dial for your wind, then have it print it out in MOA. But I would hold for your wind, and use your mil reticle. Read up in the optics section on the sticky topics (the top threads that never move) about how to dial and use your scope. There is lots of info on this site to read.

 

[sobrbiker883]

Re: Mil/MOA

Dope in inches of drop need to be converted to MOA, then dialed.

ie-if 20" of drop at 500 yards=X moa
1moa=1.047 at 100 yds
20 X 1.047 / 5 (hundred yards)
20.94 / 5

4.18 MOA

Dial 4.25


I'd have done 20 divided by 5 and added 5% for the difference.

Stop thinking in clicks and inches.



Next time you search try this:
Sniper's Hide Google Custom Search

 

[Rob01]

Re: Mil/MOA

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ChadTRG42</div><div class="ubbcode-body">
To the OP- plug in your ammo information in JBM calculator. Have your elevation in MOA and your wind in mils (if you plan to hold for wind). If you plan to dial for your wind, then have it print it out in MOA. But I would hold for your wind, and use your mil reticle. Read up in the optics section on the sticky topics (the top threads that never move) about how to dial and use your scope. There is lots of info on this site to read. </div></div>

What he said. Stop thinking in clicks and inches. Not needed. Run the JBM chart in MOA(FULL MOA's and not clicks) on one column and Mils(AGAIN FULL MILS) in the other column and then you have your data in MOA to dial and Mils to hold. Simple. No math and no inches.

 

[Katahdin]

Re: Mil/MOA

Let's say you elevation knobs are a true .25MOA. Your known information is 500 yards to target and 20" of drop. First figure out what your true click value is at 500 yards.

.25 x 5 (units of 100 yards) = 1.25 true click value.

Now divide your drop by your true click value.

20/1.25 = 16 clicks above your 100 yard zero

to convert true click value to MOA divide by 4

16/4 = 4 MOA above your 100 yard zero.

You would need to come up 4MOA on your elevation turret to hit a target a 500 yards.

The biggest thing is forgetting about talking in inches and talk in minutes of angle, they are not the same but similar. Once you accomplish this its much easy to communicate.

 

[sobrbiker883]

Re: Mil/MOA

That's IPHY, why bother starting with "Let's say you elevation knobs are a true .25MOA"


It will never be bad to learn the concepts and understand the applications.

But for field use-Chad and Rob are spot on. Get some known dope, then use JBM to make range cards for all the conditions you may find yourself in.

btw-I still print mine in mils and moa even though I've converted to mil/mil. You never know when a buddy with a similar rig yet different units of measuremnt on their optics is going to need a hand....

 

[Katahdin]

Re: Mil/MOA

There are also mathematical equations to convert mil to moa and vice versa.

First you need to understand the difference between true minute of angle and shooter's minute of angle (aka Inches Per Hundred Yard or IPHY)

At 100 yards:
True minute of anlge = 1.047"
Shooters minute of angle or IPHY = 1.0"
mil = 3.6"

To find the conversion equation divide the value for 1 mil by the value of 1 TMOA. It looks like this:

3.6/1.047 = 3.438

Now some people round to 3.5 or 3.44 but I like to use 3.438.

So in your case where you know you Mil holdovers you can convert that information to MOA using the conversion factor. To convert Mils to MOA it will look something like this.

Let's say your Mil holdover at 500 yards is 3.9 mils.

3.9 x 3.438 = 13.4 MOA, you would round that up to 13.5moa obviously since you can't dial to the nearest .1 moa.

To convert MOA to mils simply divide

13.4/3.438 = 3.89 mils, round to the nearest 1/10th mil or 3.9 mils

clear as mud, good. enjoy!

 

[Katahdin]

Re: Mil/MOA

because the op has not diagnosed his turrets, he is stating they are .25moa which very well could be, however he did not supply any further information than .25 knobs. My .25 moa knobs are actually .26 so my information would be slightly different. I was just giving him information based on the information he gave

 

[Rob01]

Re: Mil/MOA

Why people feel the need to bring inches into everything simply baffles me.

<span style="font-family: 'Arial Black'"> </span> <span style="font-size: 17pt">RUN YOUR DATA IN THE GRADUATION YOUR SCOPE CORRECTS IN AND DIAL IT ON. NO NEED FOR INCHES OR ANY OTHER LINEAR FORM.</span>

 

[sobrbiker883]

Re: Mil/MOA

Reading the Optics FAQ's and passing a small quiz on the mil/moa should be part of the registration process......

 

[mshaner]

Re: Mil/MOA

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Rob01</div><div class="ubbcode-body">Why people feel the need to bring inches into everything simply baffles me.

<span style="font-family: 'Arial Black'"> </span> <span style="font-size: 17pt">RUN YOUR DATA IN THE GRADUATION YOUR SCOPE CORRECTS IN AND DIAL IT ON. NO NEED FOR INCHES OR ANY OTHER LINEAR FORM.</span> </div></div>

Did you come out of the womb that smart?

Too bad it can't happen for the rest of us...lighten up chief...it'd be nice if everyone was instantaneously as brilliant as the EXPERIENCED shooters here. Please note the word "experienced". You have to start somewhere...and that's what I'm doing so kindly get off my &^%$. As with anything, the quality of questions improve as one discovers what he doesn't know.

BTW, to the poster just above this one...good suggestion...I'm going there now...was not aware of the option. Thanks.

BTW, Merry Christmas.

Shane

 

[Long_Action]

Re: Mil/MOA

 

[TOP PREDATOR]

Re: Mil/MOA

how do i get THAT smilie?

i would of expected LINDY to chime in on the subject, but probably just has his head lowered in disbelief.

 

[427Cobra]

Re: Mil/MOA

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Shano</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Rob01</div><div class="ubbcode-body">Why people feel the need to bring inches into everything simply baffles me.

<span style="font-family: 'Arial Black'"> </span> <span style="font-size: 17pt">RUN YOUR DATA IN THE GRADUATION YOUR SCOPE CORRECTS IN AND DIAL IT ON. NO NEED FOR INCHES OR ANY OTHER LINEAR FORM.</span> </div></div>

Did you come out of the womb that smart?

Too bad it can't happen for the rest of us...lighten up chief...it'd be nice if everyone was instantaneously as brilliant as the EXPERIENCED shooters here. Please note the word "experienced". You have to start somewhere...and that's what I'm doing so kindly get off my &^%$. As with anything, the quality of questions improve as one discovers what he doesn't know.

BTW, to the poster just above this one...good suggestion...I'm going there now...was not aware of the option. Thanks.

BTW, Merry Christmas.

Shane </div></div>

you really should careful, Rob01 is a great shooter, good teacher and a Moderater here!

Stop thinking in how many ckicks an how many inches of drop, and start thinking in what will my come ups be to hit the target at whatever range.

 

[20Incher]

Re: Mil/MOA

Teacher description as wiki=Description
Competencies Teaching abilities, pleasant disposition, patience. The only one on here I would call a teacher is Lindy,he fits the description.

 

[Rob01]

Re: Mil/MOA

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Shano</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Rob01</div><div class="ubbcode-body">Why people feel the need to bring inches into everything simply baffles me.

<span style="font-family: 'Arial Black'"> </span> <span style="font-size: 17pt">RUN YOUR DATA IN THE GRADUATION YOUR SCOPE CORRECTS IN AND DIAL IT ON. NO NEED FOR INCHES OR ANY OTHER LINEAR FORM.</span> </div></div>

Did you come out of the womb that smart?

Too bad it can't happen for the rest of us...lighten up chief...it'd be nice if everyone was instantaneously as brilliant as the EXPERIENCED shooters here. Please note the word "experienced". You have to start somewhere...and that's what I'm doing so kindly get off my &^%$. As with anything, the quality of questions improve as one discovers what he doesn't know.

BTW, to the poster just above this one...good suggestion...I'm going there now...was not aware of the option. Thanks.

BTW, Merry Christmas.

Shane</div></div>

Actually chief no I didn't. I got it from years of expierence and learning and seeing when people are giving me good information and taking it. When they put it in large bold letters so it sinks in more as in being more important and not in yelling then I took that information as more important and learned from it.

Obviously you don't so please don't take that info and learn from it. Keep using incheas and clicks. I would rather shoot against someone like that.

 

[Rob01]

Re: Mil/MOA

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 20incher</div><div class="ubbcode-body">Teacher description as wiki=Description
Competencies Teaching abilities, pleasant disposition, patience. The only one on here I would call a teacher is Lindy,he fits the description.</div></div>

Sorry I don't live up to your high expectations. Feel free not to read any of my posts as well.

 

[20Incher]

Re: Mil/MOA

Your last post is where you fail.

 

[20Incher]

Re: Mil/MOA

Blah blah blah he's a great shooter.So am I and everybody here .My first cold bore shot at 200 yrds was 1cm off the x .Been shooting since 6yrs old.Would you guys destroy me at long range 1000% .427 cobra are you in love with rob?

 

[Rob01]

Re: Mil/MOA

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 20incher</div><div class="ubbcode-body">Your last post is where you fail.</div></div>


Honestly I don't care if I fail in your eyes. I post here to help people out. If I'm not the kind old, fatherly task master who coddles you and makes you feel all warm and fuzzy inside and that upsets you then oh well. Doesn't make the post any less valid.

When you see the same subjects come up here day after day and week after week sometimes you need to put some more emphisis on it so other who search the subjects see that point and learn from it without asking the question again. Maybe you will learn that if you stay on the site any longer.

As I said feel free to ignore and not read my posts.

 

[Lindy]

Re: Mil/MOA

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">i would of expected LINDY to chime in on the subject, but probably just has his head lowered in disbelief.</div></div>

Lindy is working at Rifles Only - there's a trainup in progress, to be followed by the Fall Sniper's Hide/Rifles Only Shooter's Bash.

But I'm not needed for this thread - Rob knows what he's talking about.

 

[mshaner]

Re: Mil/MOA

Rob01,

Sir, my apologies for getting off on the wrong foot...I have zero argument with the inches/clicks issue...never really the point. A phone or face to face conversation would have gone MUCH smoother.

Simply put, question was originally posed utilizing <span style="font-style: italic">only</span> the knowledge at hand. Will put further questions in proper format utilizing newly applied knowledge/terminology.

Again, no disrespect meant...email language has in all likelyhood misconstued both of our thoughts.

I'm off to continue my review of Optics FAQs...again, a great idea.

Respectfully,

Shane

 

[20Incher]

Re: Mil/MOA

Read it again,It was about being a teacher.It's not what is written but how.I've seen many people beat up on this site by the same people.