How to Use MILs in the Field & Gather Ballistic Data | Ryan Cleckner's DOPE Collection Method

Ryan Cleckner, a former special operations sniper and author, demonstrates how to collect ballistic data (DOPE) for long-range shooting. He explains how to use milliradians (mils) to calculate elevation adjustments based on bullet drop, utilizing both ammunition box data and ballistic software like Kestrel. The process involves shooting at known distances, observing impacts, making adjustments in mils, and meticulously recording the data for future use with specific rifle and ammunition combinations.

Quick Summary

To collect ballistic data (DOPE) for long-range shooting, determine your target distance and estimate bullet drop in centimeters. Convert this drop to milliradians (mils) by dividing by the mil subtension at that distance (e.g., 2.25 cm per mil at 225m). Record these adjustments for specific rifle and ammo combinations to ensure accurate first-shot hits.

Chapters

  1. 00:08Introduction to Mils and DOPE
  2. 00:45Process for Collecting Ballistic Data
  3. 01:03Methods for Determining Bullet Drop
  4. 01:25Example: 225 Meter Target Calculation
  5. 02:33Applying and Confirming Elevation Adjustments
  6. 03:53Recording Your DOPE
  7. 04:08Example: 300 Meter Target Calculation
  8. 04:48Focusing on Elevation, Ignoring Wind for DOPE
  9. 05:14Summary and Call to Action

Frequently Asked Questions

What is the purpose of collecting DOPE in long-range shooting?

DOPE (Data On Previous Engagements) is crucial for long-range shooting as it provides recorded ballistic data for specific rifle and ammunition combinations at various distances. This data allows shooters to make precise elevation and windage adjustments, ensuring accurate first-shot hits on targets without guesswork.

How do you convert bullet drop to milliradians (mils)?

To convert bullet drop to mils, you need to know the distance to the target and the subtension of one mil at that distance. A common rule is that 1 mil subtends approximately 10 cm at 100 meters. For a 225-meter target, think in 2.25 cm chunks per mil. Divide the bullet drop in centimeters by this value to get the required mil adjustment.

Should I use ammunition box data for ballistic adjustments?

Ammunition box data can provide a useful starting point or ballpark estimate for bullet drop. However, it's not always precise for your specific rifle. It's recommended to use this data as a reference and then verify and refine your ballistic data through actual range testing and recording your own DOPE.

Why is it important to shoot multiple rounds when collecting DOPE?

Shooting multiple rounds at a specific distance helps establish a trend and confirm the accuracy of your elevation adjustment. Relying on a single shot can be misleading, as it might be a lucky hit. Multiple shots provide a more reliable data point for your DOPE card.

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