T1Defense 17 Posted December 17, 2014 Size of target in inches X 27.778 ÷ milliradian reading in your scope = distance to target in yards. Quote Share this post Link to post Share on other sites
Recon Racoon 49 Posted December 20, 2014 Size of target in inches X 27.778 ÷ milliradian reading in your scope = distance to target in yards. So following this formula, if I had a target that is 34 inches tall and reads as 4 mils, the rang would be 236.113 yards. Since this formula is kinda just plug and play, if you had a DOPE chart with common target heights (paper targets, steel silhouettes, deer etc) you would just need to divide by mills and get the range. But how is height measure with mil dots? Is it from the top dot to the bottom of what ever? Sent from my iPhone using Tapatalk Quote Share this post Link to post Share on other sites
T1Defense 17 Posted December 21, 2014 In a mil dot scope the, you're measuring from the center of each dot. Quote Share this post Link to post Share on other sites
T1Defense 17 Posted December 21, 2014 Center to center would be 1 mil, center edge to center edge would be .8 mil. Quote Share this post Link to post Share on other sites
T1Defense 17 Posted December 21, 2014 Your DATA book would contain common sizes of oridnary objects, approximate head width, MAM height, bricks, stop signs etc. If you know the size of common objects you don't even need a book. Your DOPE would be the amount of elevation you need to dial in or hold in your optic. Quote Share this post Link to post Share on other sites
Blackjack988 8 Posted December 22, 2014 Also remember that if you are using a Second Focal Plane reticle, you have to perform these calculations at a specific magnification level for them to be accurate. Quote Share this post Link to post Share on other sites
Vlad G 345 Posted December 22, 2014 Laser range finder. Seriously, they've gotten so cheap and compact that it makes no sense to screw with math in your head anymore for the purpose to range estimation. Give me a reticle that lets me work windage and elevation quickly based on knowing the range and I'll buy a range finder. Quote Share this post Link to post Share on other sites
Old School 611 Posted December 22, 2014 Laser range finder. Seriously, they've gotten so cheap and compact that it makes no sense to screw with math in your head anymore for the purpose to range estimation. Give me a reticle that lets me work windage and elevation Sickly based on knowing the range and I'll buy a range finder. Scary - We agree again. Mil-dots are too big for me to make precise bullet placement. I sight on 1" dots @ 300 for practice. I use hash mark reticles. They cost me a little more (75-100 per scope) but very precise for hold off. Yep Range finder works for me. Quote Share this post Link to post Share on other sites
Iggyort 44 Posted December 22, 2014 Laser range finder. Seriously, they've gotten so cheap and compact that it makes no sense to screw with math in your head anymore for the purpose to range estimation. Give me a reticle that lets me work windage and elevation quickly based on knowing the range and I'll buy a range finder. You are correct. However , at many Precision Rifle Matches you have stages with unknown distances and it is up to the competitor to figuire out the distance without the use of a Range Finder.Typically in those type of stages the size of the target is provided. Quote Share this post Link to post Share on other sites
bhunted 887 Posted December 22, 2014 There's an app for that! Quote Share this post Link to post Share on other sites
Parker 213 Posted December 22, 2014 For the non-mil-dot/mil-rad crowd- When I graduated from a plain/fine crosshair reticle to a duplex reticle scope back in the 70's, this was good to learn: http://artoftherifleblog.com/holding-for-elevation-part-ii/2011/11/holding-for-elevation-part-ii.html I recall every Weaver, Redfield and Leupold manual that came packaged with the scope back then had similar instructions on how to use the duplex to judge range based on known objects. 18" of "deer" from top to bottom was the general rule of thumb as that was usually the intended quarry. http://www.longrangehunting.com/articles/ranging-reticles-1.php Quote Share this post Link to post Share on other sites
T1Defense 17 Posted December 23, 2014 Nothing wrong with an LRF, but like any technology, it can fail. Quote Share this post Link to post Share on other sites
monmouth 19 Posted January 2, 2015 No need for a range finder if you can properly range a target. As T1 said, one less thing to fail....or carry. Mil-dot master is a great tool and must have. Quote Share this post Link to post Share on other sites
Eric. 9 Posted February 25, 2015 In addition to being able to use the formula, you also have to be proficient at ranging to within a tenth of a mil. Estjmating to a half or a quarter is not good enough. From the center of one dot, to the center of the next is 1 mil. If you add a half dot, that is now 1.1 mil. If you range from the bottom edge of one dot to the far top edge of the next, you have 1.2 mils. From the inside edge of one dot, to the inside edge of the next is .8 mils. Each round (not oval) mil dot is .2 mils. Eric Quote Share this post Link to post Share on other sites