MIL DOTS
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GTA
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All Springer/NP/PCP Air Gun Discussion General
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Optics, Range estimation & related subjects
(Moderators:
Tpatner412
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MIL DOTS
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Topic: MIL DOTS (Read 840 times))
truck
Marksman
Posts: 341
Real Name: Barry
MIL DOTS
«
on:
December 25, 2018, 12:18:40 PM »
I have this scope
https://airgunopticsplus.com/collections/scopes/products/discovery-optics-vt-2-4-5-18x44-sfir-side-focus-illumination-mil-dot-reticle-rifle-scope-with-sun-shade
How do I do the math to use those mil dots?
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Breinigsville, Pa. USA
screwwork
N.U.A.H. Marksman
GTA Senior Contributor
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Real Name: Randy
Re: MIL DOTS
«
Reply #1 on:
December 25, 2018, 12:53:11 PM »
Barry,
I use gun-chair to get my hold-over/under.
see discovery website for better detail of the Mil-dot on the scope.
http://www.discovery-optics.com/index.php?m=Product&a=show&id=147
Discovery also says the true Mil-dots are set to 10X on the scope.
«
Last Edit: December 25, 2018, 12:59:57 PM by screwwork
»
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Nor-Cal
177. Airmax MK II pistol
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Back_Roads
I Got A 15 Pump BB Gun :) BB Guns Got Much More Complicated :)
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Posts: 15715
1st Edition Crosman 760 Pump Master
Real Name: James Seiler
Re: MIL DOTS
«
Reply #2 on:
December 25, 2018, 01:04:06 PM »
You will need to know the velocity of the pellet to know exact holdovers. Before I had a crono, I used info on the gun I was shooting from youtube reviews and reports from shooters here.
What gun are you sighting in ? Im sure we can get you shooting long range in no time
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rsterne
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Re: MIL DOTS
«
Reply #3 on:
December 26, 2018, 06:25:23 PM »
According to the Ad you linked, the MilDots are accurate at 10X.... That scope is only 4.5 - 18X, and it's a SFP scope, so the distance between the Dots will change as you zoom the scope.... One MilDot is 3.6" at 100 yards (3600 inches) because a true MilDot is an angle equal to 1/1000, ie 1" at 1000", 1 ft. @ 1000 ft. etc.etc….
If you set your maginification to 10X, then the MilDots should be accurate.... At 4.5 X the distance between them at 100 yards will be (10 / 4.5) x 3.6" = 8".... and at 18 X at 100 yards they will be (10 / 18) x 3.6 = 2" apart.... How that relates to your trajectory depends on the pellet, velocity, scope height and the range you are sighted in....
Hope that helps....
Bob
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Back_Roads
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Real Name: James Seiler
Re: MIL DOTS
«
Reply #4 on:
December 26, 2018, 06:33:49 PM »
Here is a video on using mildots.
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truck
Marksman
Posts: 341
Real Name: Barry
Re: MIL DOTS
«
Reply #5 on:
December 27, 2018, 12:41:48 AM »
Now I have a better understanding of how to use mil dots. Thanks.
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Breinigsville, Pa. USA
Hobbyman2007
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Real Name: Denis
Re: MIL DOTS
«
Reply #6 on:
December 28, 2018, 07:31:13 AM »
This is exactly why I have switched to FFP scopes . No math required .
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Dowling,Ontario, Canada
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Scotchmo
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Posts: 2333
Real Name: Scott Hull
Re: MIL DOTS
«
Reply #7 on:
December 28, 2018, 04:25:48 PM »
Quote from: Hobbyman2007 on December 28, 2018, 07:31:13 AM
This is exactly why I have switched to FFP scopes . No math required .
The same math is required for SFP or FFP.
The only difference is that you will not need to factor in the magnification when zooming on a FFP scope. I'm mostly using FFP scopes now.
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Los Osos, California
Morro Bay Airgunners
sscoyote
Shooter
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Real Name: Steve
Re: MIL DOTS
«
Reply #8 on:
December 30, 2018, 08:05:43 AM »
Quote from: Hobbyman2007 on December 28, 2018, 07:31:13 AM
This is exactly why I have switched to FFP scopes . No math required .
I actually really love the math. It's the only thing I actually like applying math for. As Bob details above reticle subtension is inversely proportional to magnification in 2FP optics, and the "mil-ranging formula" defines rangefinding with any angular system from mil-dots to plex reticles to archery sight pins (if one wishes), and also defines downrange zeroing as well. Some pretty amazing things can be accomplished by applying math in the field sometimes.
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Pueblo, CO
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GTA
»
All Springer/NP/PCP Air Gun Discussion General
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Optics, Range estimation & related subjects
(Moderators:
Tpatner412
,
only1harry
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GTA-Airgunner
) »
MIL DOTS