OpticsTalk by SWFA, Inc. Homepage SWFA     SampleList.com
Forum Home Forum Home > Scopes > Rifle Scopes
  New Posts New Posts RSS Feed - updated 1/4 1/8 MOA vs.  .1 or .05 MRAD Distance
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Visit the SWFA.com site to check out our current specials.

updated 1/4 1/8 MOA vs. .1 or .05 MRAD Distance

 Post Reply Post Reply
Author
Message
338LAPUASLAP View Drop Down
Optics Master
Optics Master

Scope Swapper

Joined: October/17/2009
Status: Offline
Points: 2596
Post Options Post Options   Thanks (0) Thanks(0)   Quote 338LAPUASLAP Quote  Post ReplyReply Direct Link To This Post Topic: updated 1/4 1/8 MOA vs. .1 or .05 MRAD Distance
    Posted: October/20/2012 at 09:11
MOA and MRAD can be tricky I guess.
 
It never changes and is a constant.  Do not confuse the TWO they are very different.  Why did I convert MRAD to inches when MM are the standard unit.  Because we still measure in inches and still call MOA groups (I don't like it either)...
 
Milliradian usage is not complicated, though it may seem so at first.
 
1000radians = milliradian
 
1 milliradian = 1000radians
 
Basically, one “mil” equals 1 unit at 1000 units of distance.
 
So a 1” object will occupy 1 mil of space on the reticle when it is 1000 inches away.

3.6” at 3600 inches (100 yards)

1 foot at 1000 feet

1 “mil”=

1 yards at 1000 yards

1 meter at 1000 meters

For those thinking in terms of Minute-of-Angle (MOA),

1 mil = 3.438 MOA.

 
I still get asked this very frequently and was just PM'd about how to know these values.  SEE THE MATH PORTION AT THE BOTTOM
 
I hope I didn't make any mistakes.
 

YRDS

MOA

 

MOA

MOA

 

MRAD

MRAD

MRAD

 

INCHES

 

0.25

0.125

 

INCHES

0.1

0.05

100

1.047197551

1MOA

0.261799388

0.130899694

1MRAD

3.6

0.36

0.18

200

2.094395102

1MOA

0.523598776

0.261799388

1MRAD

7.2

0.72

0.36

300

No one
Back to Top
pyro6999 View Drop Down
Optics Retard
Optics Retard
Avatar
OT TITAN

Joined: December/22/2006
Location: North Dakota
Status: Offline
Points: 22034
Post Options Post Options   Thanks (0) Thanks(0)   Quote pyro6999 Quote  Post ReplyReply Direct Link To This Post Posted: October/20/2012 at 09:14
i hate math. your an animal!!Excellent
They call me "Boots"
375H&H Mag: Yeah, it kills stuff "extra dead"

343 we will never forget

God Bless Chris Ledoux
"good ride cowboy"
Back to Top
338LAPUASLAP View Drop Down
Optics Master
Optics Master

Scope Swapper

Joined: October/17/2009
Status: Offline
Points: 2596
Post Options Post Options   Thanks (0) Thanks(0)   Quote 338LAPUASLAP Quote  Post ReplyReply Direct Link To This Post Posted: October/20/2012 at 09:29
No, it is really simple I promise.
 
Rule of thumb: 1 MOA = rounded 1 inch @ 100yrds or 10 inches @ 1000yrds
 
so simply use .25 or .125 x distance.  That makes it much easier.
 
As shown the math is ridiculous so maybe use
(1.04" or 10.4"at 1000yrds).
 
Rule of thumb: 1 MRAD = 3.6" @100yrds or 36" @ 1000yrds
 
so increments of .36 and .18 x distance. Again Easy
 
SKIP TABLE 2 as you should not really measure in meters and shoot in inches but I did get the question as a few clubs are in meters and a few people are out of this country.  The math in Meters and CM is much more simple.
 
 
No one
Back to Top
pyro6999 View Drop Down
Optics Retard
Optics Retard
Avatar
OT TITAN

Joined: December/22/2006
Location: North Dakota
Status: Offline
Points: 22034
Post Options Post Options   Thanks (0) Thanks(0)   Quote pyro6999 Quote  Post ReplyReply Direct Link To This Post Posted: October/20/2012 at 09:36
works for me.
They call me "Boots"
375H&H Mag: Yeah, it kills stuff "extra dead"

343 we will never forget

God Bless Chris Ledoux
"good ride cowboy"
Back to Top
338LAPUASLAP View Drop Down
Optics Master
Optics Master

Scope Swapper

Joined: October/17/2009
Status: Offline
Points: 2596
Post Options Post Options   Thanks (0) Thanks(0)   Quote 338LAPUASLAP Quote  Post ReplyReply Direct Link To This Post Posted: October/20/2012 at 11:08
I did this in Excel as an easier way to do things I guess it might have confused some.
 
Simply pick your value of correction on your scope either in MOA or MRAD and then pick your distance that will tell you how much you are moving with 1 CLICK or POSITION VALUE...
No one
Back to Top
billyburl2 View Drop Down
Optics Master Extraordinaire
Optics Master Extraordinaire
Avatar

Joined: January/08/2009
Location: Cottonwood, AZ
Status: Offline
Points: 4015
Post Options Post Options   Thanks (0) Thanks(0)   Quote billyburl2 Quote  Post ReplyReply Direct Link To This Post Posted: October/20/2012 at 12:01
The best solution is to have a spotter with a reticle as well, and a buddy who knows how to read it!
If it is tourist season, why can't we shoot them?
Back to Top
338LAPUASLAP View Drop Down
Optics Master
Optics Master

Scope Swapper

Joined: October/17/2009
Status: Offline
Points: 2596
Post Options Post Options   Thanks (0) Thanks(0)   Quote 338LAPUASLAP Quote  Post ReplyReply Direct Link To This Post Posted: October/20/2012 at 17:03

This is not a replacement of any mildot or reticle measurement system this is for someone who has common plex or crosshairs or target dot and has troubles with the math or needs a cheat sheet.

No one
Back to Top
3_tens View Drop Down
Optics Jedi Master
Optics Jedi Master
Avatar

Joined: January/08/2007
Location: Oklahoma
Status: Offline
Points: 7853
Post Options Post Options   Thanks (0) Thanks(0)   Quote 3_tens Quote  Post ReplyReply Direct Link To This Post Posted: October/20/2012 at 18:29
That was a lot of work just to put in in a post. Hats to you good work.Kneel Suckers
Folks ain't got a sense of humor no more. They don't laugh they just get sore.

Need to follow the rules. Just hard to determine which set of rules to follow
Now the rules have changed again.
Back to Top
338LAPUASLAP View Drop Down
Optics Master
Optics Master

Scope Swapper

Joined: October/17/2009
Status: Offline
Points: 2596
Post Options Post Options   Thanks (0) Thanks(0)   Quote 338LAPUASLAP Quote  Post ReplyReply Direct Link To This Post Posted: October/20/2012 at 18:35

Anyone want the expanded version with 5yrd and 5 meter segments.

I also have a calculator I could give you. Or you could go to the dollar store and buy that same calculator.
 
This was no sweat each cell or value converts buy 1 of three inputs and just flows from that computation.
 
The bottom shows the simplicity of radians and minutes.
No one
Back to Top
budperm View Drop Down
Optics Retard
Optics Retard
Avatar
show me your sheep!!

Joined: January/01/2009
Location: Pennsylvania
Status: Offline
Points: 31710
Post Options Post Options   Thanks (0) Thanks(0)   Quote budperm Quote  Post ReplyReply Direct Link To This Post Posted: October/21/2012 at 08:29
It took some muddling but I actually understood all that....surprise ...surprise! ExcellentExcellentExcellent
 
I cleared up alot of my confusion between the different measurement systems!
 
Well done Steve!!!  I'm sure that chart provided several hours of distraction to set-up.
 
Thanks for sharing...it really helped.
"Peace is that brief glorious moment in history when everybody stands around reloading".
--Thomas Jefferson



Back to Top
338LAPUASLAP View Drop Down
Optics Master
Optics Master

Scope Swapper

Joined: October/17/2009
Status: Offline
Points: 2596
Post Options Post Options   Thanks (0) Thanks(0)   Quote 338LAPUASLAP Quote  Post ReplyReply Direct Link To This Post Posted: October/22/2012 at 11:37
YARDS 1 MOA 1/4 MOA 1/8MOA
100 1 0.25 0.125
200 2 0.5 0.25
300 3 0.75 0.375
400 4 1 0.5
500 5 1.25 0.625
600 6 1.5 0.75
700 7 1.75 0.875
800 8 2 1
No one
Back to Top
budperm View Drop Down
Optics Retard
Optics Retard
Avatar
show me your sheep!!

Joined: January/01/2009
Location: Pennsylvania
Status: Offline
Points: 31710
Post Options Post Options   Thanks (0) Thanks(0)   Quote budperm Quote  Post ReplyReply Direct Link To This Post Posted: October/22/2012 at 11:59
I'm the reason they came up with handgrenades... Bucky .... and shotguns come to think about it!
"Peace is that brief glorious moment in history when everybody stands around reloading".
--Thomas Jefferson



Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.01
Copyright ©2001-2018 Web Wiz Ltd.

This page was generated in 0.316 seconds.