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Don't understand my Mil Dot scope

 
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  #1  
Old 05-24-2009, 05:57 PM
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Don't understand my Mil Dot scope

I recently installed a Elite 6500 4.5x30x50MM Mil dot scope on my 6x284. Shot rifle at 100 yards.Placed a tape measure on target to measure where the mil dots are on the target at various zoom settings.For example on 10x 1st mil dot is 4" below POA.2nd 91/2" 3rd 15" 4th is 20". So I brought rifle into NV desert and shot at a rock that laser ed 295 yds. Book says my bullet drops 4.3" at 300 yds when sighted in for 200yds. (70gr Nosler BT 3,850 FPS). So I aimed setting the 1st Mil Dot on the rock. The bullet went over the top of the rock? So I aimed at the tip of the rock and hit it. I fired three rnds and hit it all 3 shots,severely wounding the rock.So Walking up to rock and all the shots were at the top of rock where I aimed. I thought they'd be lower ? Ok next set up a steel plate at about 550 yds. Book say bullet drops 27" with 200 yds zero. So I aimed using last Mildot (5th one). Again shots went over the target ? So I aimed with 4th same thing over the target ! Out of frustration I used 1st mil dot at the plate and I hit it! This is at 550 yds ???? ..............What am I missing here? Also targets were about 5 degrees up hill,elevation 4,000 FT develop load at sea level.............. Shot plate( 3/8ths plate) at 210 yds and that 70 gr Nosler completely pierced it.At 500 it look like it "Cut a dent" in the plate,amazing how powerful that cartridge is!
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Old 05-24-2009, 06:52 PM
CAM CAM is offline
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Re: Don't understand my Mil Dot scope

Iron Worker

I think your missing the whole concept!
I don't have that scope or use mils, BUT

If your mil spacing at 10 power is as you said 4" lower than the crosshair at 100yrds.
then at 300 yards that same mil will be 3*4"= 12" under Cross

then at (about) 550 yards that same mil dot will be 5.5*4"= 22" under Cross

I think a mil is 3.6" at 100yrds. but I could be wrong I don't use mils!
Most scopes are set on highest mag for calibration but not all.
some scopes spacing changes with power change some don't. FFP vs SFP

Their will be lot's of help on this,
so
1 mil at 100 yards = 3.6"
then that same mil dot at 200 yards is 7.2"
300 yards it is 10.8"
400................14.4"
500................18"

You will get this is just takes some getting use to.
CAM
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Old 05-24-2009, 07:01 PM
CAM CAM is offline
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Re: Don't understand my Mil Dot scope

Forgot to say if you do a search there is lot's and lot's of reading.
everyone looks at this different but it is simple math and the end resault is the same.
I use MOA but the concept is the same!

1 MOA @ 100yards= close to 1" actually 1.047"
so 1 MOA @ 200 yards= 2"
so 1 MOA @ 500 yards= 5"
when you get to 1K, 1 MOA= 10.47"

If your spacing changes with scope power change, everything changes!

Cam

Last edited by CAM; 05-24-2009 at 07:06 PM.
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Old 05-24-2009, 08:24 PM
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Re: Don't understand my Mil Dot scope

Cam thanks for tactfully shinning a flash light in my face. Any how I bought this scope on e-bay for a great low price. Normally I wouldn't of purchased a Mil Dot scope. So I understand my mistake.This forum and others like it our great !
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Old 05-24-2009, 09:42 PM
CAM CAM is offline
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Re: Don't understand my Mil Dot scope

Don't get discouraged, all will be fine, we just need to get the info to you in a way it makes sense.
Mil-Dot Hold Over Question
Is it a mistake
Conversion from mil-dot to MOA on IOR MP-8

Start with these then ask questions.
Cam

Last edited by CAM; 05-24-2009 at 09:59 PM.
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  #6  
Old 05-25-2009, 02:32 AM
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Re: Don't understand my Mil Dot scope

Iron Worker,
if your distance is exactly 100 yards, and your parallax has been adjusted right for 100 yards, your drops from point of aim should be:

For 1st one: 3.6"
2nd one: 7.2"
3rd one: 10.8"
4th one: 14.4"

When you took the readings at 10X, the scope was either moving or the parallax was not adjusted right. The spreading you were getting was:
4"; 5.5"; 5.5"; 4"
There is no consistency.
I think, if you set your power ring at 11x, then you should be reading in
3.6" increments with consistency.

Once you know at what power range you're getting the 3.6", do not get a
drop chart telling you how many inches the bullet drops; get a drop chart
telling you how many mil-dots you need of adjustments to hit the target.
No need to complicating things.



Example: You range a target at 500 yards. The table above tell you the bullet would impact 33.9" below the target... I don't want that... It also says it will impact at 1.9 mil-dots low... that info is what I want, now I raise my sights almost 2 mil-dots and let it fly...

I hope that helps.
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Last edited by Eaglet; 05-25-2009 at 02:38 AM.
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  #7  
Old 05-25-2009, 09:17 AM
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Re: Don't understand my Mil Dot scope

Where do I get this "Drop Chart" that corresponds with my calibers trajectory
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