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#1




Whats a "true" Mildot? & Moldot measuring/zero charts
Just been reading the excellent thread on Range finding for HFT but I'm a little confused (Very easy, believe me) What is a true mildot?
I thought ( and read) that a mildot is a representation of 36"@1000yds, The military say the average man is 6ft (below average for me, again) so if a man covers exactly 2mildots, then he's exactly 1000yds away. I use a computor program called MilDot RangeFinder, you input a target size and the scope mag (10x in my case) and then drag the bottom of a circle (representing the target size) down a Mildot reticle, the top of the circle being fixed at the crosshair centre, watching the range window at the side, you can read what range the circle is covering in mildots. You can also input the MOA/DOT @10mag, I've always put in 3.6 but there's a button underneith saying "true Mildot", when pushed it changes the 3.6 to 3.438? So which is it 3.6 or 3.438?????? Very confused If it matters any, im using a Falcon menace 10x42 MP20
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#2




its just the distance between the dots
i think 3.44 MOA is true mildot size (from memory)
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#3




mildot
mildot is derived from the metric system of angular measerment now used by hm forces: hope these definations help
1 milliradian  a unit of angular distance equal to one thousandth of a radian angular unit  a unit of measurement for angles microradian  a unit of angular distance equal to one thousandth of a milliradian radian, rad  the unit of plane angle adopted under the Systeme d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees) 2 The Mildot reticle was originally developed for the millitary for rangefinding purposes. Each dot on the Mildot reticle represents 3.6 inches at 100 yards or 36 inches at 1,000 yards. Although these ranges are well outside the ability of most airguns, the distances can be scaled down to provide a very effective reticle for airgun use. Many airgunners swear by the Mildot reticle and through experience have developed a natural understanding of what each dot represents at a given range. 
#4




Quote:
Thanks for the info
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AA EV2 Mk2/Hawke Panorama half mildotEmleyMoor FTC 
#5




I did a bit of research on this a few years ago now and from memory I managed to find 4 different definitions of what a "MilDot" is.
Don't worry too much about it though, the definition I use as being true is the distance between the centre of one dot to the centre of the next dot is 1 MilliRadian or 3.44 MOA (It's not the distance between the dots, that's usually 0.8 MilliRadians. Your Falcon also uses the 3.44 MOA definition of a MilDot so I would consider that to be "True" Ok you don't really care about any of that though, you just want to know how to use them for your holdovers and possibly for rangefinding. Chairgun will get you in the right ballpark, but I prefer to trust bits of paper... to that end I knocked up some extremely nerdy practice targets. These targets need to be placed out at the correct printed range because they are graduated with Mildots at the correct size for that range. 12 Yards 13 Yards 15 Yards 20 Yards 25 Yards 30 Yards 32 Yards 35 Yards 40 Yards 42 Yards 45 Yards Note: These targets have been updated now  the latest versions can be found at www.anstonftc.co.uk/targets Print those out, place them out at the correct measured distance and look through your scope to check that the mildots on the targets line up exactly with your scope.. if they don't something's wrong  also check that the 150mm marking on the targets measures 150mm  if it doesn't then you may need to adjust the Print settings in Acrobat to produce a 100% print and not "Print to Fit paper". Once they all line up, shoot groups at each distance by aiming your crosshairs at the centre of each target (the Red Dot)  you'll then be able to inspect the targets to see exactly what your holdover or holdunder is for each range  for added accuracy, make sure your crosshairs are level when you shoot. i.e. don't "cant" your gun or the results will be slightly wrong. For example if you put the 40 yard target out and find that your pellets are all landing on the half mildot mark, then that's your holdover for 40 yards  0.5 mildots. There's no need to measure anything and then convert to mildots, it's all done for you with the exactly sized mildot graduations on each target. There are also a selection of killzones on each target for you to practice on  the smallest killzone on each target is the smallest killzone allowed in HFT at that distance. Last edited by Brian.Samson; 11th May 2012 at 06:26 AM. Reason: New targets available 
#6




You really are a top man for giving all this help, well done and thank you.

#7




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Dave
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#8




Top stuff Brian !... another sticky made
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#9




True Mil Dot is 100mm at 100m. this the reduces in proportion i.e. 50mm at 50m 25mm at 25m etc. etc. Th scope maker should state the mag at which mil dots are 'true'. On some makes including Bushnells the mag at which the Mil Dot is 'true' is marked in a different colour.
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#10




It's just a measure of "1 in a thousand". Or put another way, the distance between the centres of two adjacent mildots is one thousandth of the distance of whatever you're aiming at.
Hence 36" at 1000 yds is a true mildot because 36" is one yard: 1 yard at 1000 yards. Likewise 1 metre at 1000 metres is a true mildot. Mildots apply to both metric and imperial measurements, or any form of measurements, but because metric uses multiples of 1000 it makes the calculations easier. 1 mildot is 40mm at 40m because there are 1000 mm in 1 metre. If you work out what the actual angle of a mildot is, it is 0.0573 degrees. MOA (minutes of arc) are 1/60th of a degree so this works out at 3.44 MOA. So 36" at 1000 yds is "true", 1m at 1000m is "true", and 3.44 MOA is also "true" (or 3.438 rounded to 3 places instead of 2). A mildot is not exactly the same as a milliradian but I'm really really not ready to go into the difference! 
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