Trajectory Validation Without Chronograph

Published on September 13, 2017
Duration: 7:25

This video demonstrates a method for accurately determining your ammunition's actual muzzle velocity and generating a corrected ballistic drop chart without the use of a chronograph. By establishing a 100-yard zero and then measuring the vertical drop at a known far distance (e.g., 400 yards), you can input this data into a ballistic calculator to solve for velocity. This technique allows for more precise long-range shooting by accounting for real-world performance specific to your rifle and ammunition.

Quick Summary

You can determine your rifle's actual muzzle velocity without a chronograph by establishing a 100-yard zero, shooting at a far distance (e.g., 400 yards) to measure vertical drop, and inputting this data into a ballistic calculator. This method allows for the creation of a precise, corrected drop chart for your specific rifle and ammunition.

Chapters

  1. 00:01Introduction: Trajectory Validation Without Chronograph
  2. 00:15Method: 100 Yard Zero and Far Distance Shot
  3. 01:10Establishing the 100 Yard Zero
  4. 02:43Shooting at 400 Yards (Far Distance)
  5. 03:40Measuring the Drop at 400 Yards
  6. 04:33Using Ballistic Calculator for Velocity
  7. 05:04Trajectory Validation Input
  8. 05:46Actual Muzzle Velocity Calculation
  9. 06:16Generating Corrected Drop Chart
  10. 07:10Conclusion and Next Steps

Frequently Asked Questions

How can I determine my rifle's actual muzzle velocity without a chronograph?

You can determine your rifle's actual muzzle velocity by first establishing a 100-yard zero, then shooting a group at a known far distance (like 400 yards) and measuring the vertical drop. Inputting this drop data and distance into a ballistic calculator will solve for the precise muzzle velocity.

What is the process for validating ballistic data without a chronograph?

The process involves zeroing at 100 yards, shooting at a far distance (e.g., 400 yards) without scope adjustments, measuring the vertical drop in inches, and then using a ballistic calculator. Input the measured drop, distance, and other rifle/ammo specs to calculate the actual muzzle velocity.

What is the formula to convert inches of drop to MOA for ballistic calculations?

To convert inches of drop to Minute of Angle (MOA) for ballistic calculations, use the formula: (inches of drop multiplied by 6) divided by the distance in yards. This MOA value is then entered into a ballistic calculator.

Can I create an accurate drop chart without a chronograph?

Yes, you can create an accurate drop chart without a chronograph. By measuring the actual bullet drop at a known distance and using this data in a ballistic calculator, you can solve for the precise muzzle velocity and generate a corrected drop chart tailored to your rifle and ammunition.

Related News

All News →

More Training & Techniques Videos You Might Like

More from Precision Rifle Network

View all →