By Tom Gaylord
exclusively for PyramydAir.com. © Copyright 2004 All Rights Reserved
To answer that, we first have to know what a mil is.
A mil dot reticle does not refer to the military. The MIL in mil dot is a shortening of the term milliradian. You are familiar with degrees as measurements of angle. You also know from high school geometry that there are 360 degrees in a circle. As the circle grows larger in circumference, the number of degrees does not change, but the distance between each degree along the circle does increase. You may also know that degrees are divided into smaller units called minutes. There are seconds, too, but they are too small for this discussion. A degree is divided into 60 minutes. At 100 yards distance, the angle of one minute is approximately one inch. So if the centers of the two bullets farthest apart in a 100-yard group are about one inch apart, we call that a minute-of-angle group. Get it? At 200 yards, a group measuring two inches center- to-center equals a one minute-of-angle group. At 400 yards, it's a four-inch group. At 50 yards, it's a half-inch group.
Now what is a mil?
One mil of angle is approximately 3.6 inches long at 100 yards, and that is close enough to 3.5 minutes of angle to be convenient. In Leapers mil dot scopes, the centers of the dots are one mil apart. If the scope is variable power, this only holds true for the highest power setting.
So, if your bullseye is 3.5 inches in diameter and 100 yards away, it will touch the centers of any two dots next to each other. If it appears only half that size through the scope (from the center of one dot to half the distance to the next center) your target must be about 200 yards away. If the same bullseye spans the distance between the centers of three dots (two with an extra dot between them), your target is about 50 yards away.
Sniper rifles have mil dots on both horizontal and vertical crosshairs so they can measure height as well as width through their scopes. A six-foot tall man is also 72 inches tall. At 100 yards, he would appear to be just over 20 mils tall. At 1000 yards, he would be close to 2 mils tall.
Military binoculars and gunsights are usually equipped with mil reticles. On the standard crosshairs are other short lines that mark mill angles. These are often referred to as rangefinding reticles. To use them that way, you have to know how to apply the correct mathematical formula, plus you have to know the approximate size of your target.
What else can you use the mil dot reticle for? Well, if you are shooting in a crosswind, you can use the dots as additional aim points to compensate for wind drift. If you notice the strike of your pellets in relation to the dots, you can aim off to one side by placing a dot along the horizontal reticle over the target instead of the crosshairs. By choosing the correct dot, you can easily adjust for how much the pellet will drift in the wind and end up with a perfect shot every time. Better still, there is no math involved!
Get FREE shipping on qualifying orders!
Any order $150+ with a shipping address in the contiguous US
will receive the option for free ground shipping on items sold & shipped by Pyramyd Air during checkout.
Certain restrictions apply.
Free shipping may not be combined with a coupon unless stated otherwise.
View Shipping Info
We work hard to get all orders placed by 12 pm EST out the door within 24 hours on weekdays
because we know how excited you are to receive your order.
Weekends and holiday shipping times will vary.
During busy holidays, we step our efforts to ship all orders as fast as possible, but you may experience an additional 1-2 day delay before your order ships. This may also happen if you change your order during processing.
View Shipping Times
It's important to know that due to state and local laws, there are certain restrictions for various products.
It's up to you to research and comply with the laws in your state, county, and city.
If you live in a state or city where air guns are treated as firearms you may be able to take advantage of our FFL special program.
U.S. federal law requires that all airsoft guns are sold with a 1/4-inch blaze orange muzzle or an orange flash hider to avoid the guns being mistaken for firearms.
View Shipping Restrictions
We have a team of expert technicians and a complete repair shop that are able to service a large variety of brands/models of airguns.
Additionally, we are a factory-authorized repair/warranty station for popular brands such as
Air Arms, Air Venturi, Crosman, Diana, Seneca, and Weihrauch airguns.
Our experts also offer exclusive 10-for-$10 Test and 20-for-$20 Service, which evaluates your air gun prior to leaving our warehouse. You'll be able to add these services as you place your order.
View Service Info
Shop and purchase with confidence knowing that all of our air guns (except airsoft) are protected
by a minimum 1-year manufacturer's warranty from the date of purchase unless otherwise noted on the product page.
A warranty is provided by each manufacturer to ensure that your product is free of defect in both materials and workmanship.
View Warranty Details
Didn't get what you wanted or have a problem? We've got you covered! Return any item in new, unopened condition along with its original packaging and any accessories that might have come with your product and receive a refund within 60 days of purchase.
Our customer service team can help determine the best course of action and provide you with some options in the event you're interested in a return.
Learn About Returns
Join the Pyramyd Air mailing list: Our e-mails are filled with new products, deals, sneak peeks, tips and tricks, contests and more - sign up today!
Airgun safety is no accident. You must be 18 years or older to buy any air gun or air rifle in our store.
Text JOIN to 91256 and get $10 Off Your Next $50+ Order.