Understanding Mils (Milliradians) | Long-Range Rifle Shooting with Ryan Cleckner

This video provides a comprehensive guide to understanding and utilizing milliradians (mils) in long-range rifle shooting. It details how to use mil-based reticles for accurate range estimation and bullet drop/windage compensation. Key takeaways include the 1:1000 relationship for range calculation, the importance of focal planes (FFP vs. SFP), and practical conversion formulas for field use.

Quick Summary

A milliradian (mil) is an angular measurement where 1 mil at 1,000 yards equals 1 yard. This ratio simplifies range estimation using the formula: (Object Height x 1000) / Mils = Distance. First Focal Plane scopes maintain accurate mil readings at all magnifications.

Chapters

  1. 00:00Introduction to Milliradians
  2. 00:47Defining a Mil
  3. 02:24The Range Estimation Formula
  4. 03:32Reading the Reticle
  5. 07:23Focal Planes and Magnification
  6. 10:15Inches-to-Yards Formula
  7. 15:30Mils vs. MOA Conversion
  8. 17:02Elevation and Windage Holdovers

Frequently Asked Questions

What is a milliradian (mil) and how is it used in shooting?

A milliradian (mil) is an angular measurement. In shooting, it's used with specialized reticles to estimate range to a target and calculate bullet drop or windage corrections. The key principle is that 1 mil at 1,000 yards equals 1 yard.

How do you estimate the distance to a target using mils?

Use the formula: (Height of object x 1000) / Mils read in scope = Distance. Ensure the units for object height and the resulting distance are the same (e.g., yards).

What is the difference between First Focal Plane (FFP) and Second Focal Plane (SFP) scopes regarding mil measurements?

FFP scopes have reticles that scale with magnification, meaning mil measurements are accurate at all power settings. SFP scopes have reticles that stay the same size, so mil measurements are only accurate at a specific magnification, usually the highest.

How can I convert between Mils and MOA for shooting?

For practical field use, a common approximation is 1 Mil equals 3.5 Minutes of Angle (MOA). This allows shooters to quickly translate ballistic data or turret adjustments between the two systems.

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