Tall Target Test - Critical Step For Long Range Accuracy

Published on October 19, 2023
Duration: 29:25

The Tall Target Test is crucial for verifying scope tracking and plumb mounting in long-range precision shooting. Accurate distance measurement (100 yards) and a perfectly level rifle are essential. Analyzing shot group deviations allows for calculating correction factors to true up the scope's mechanical elevation, ensuring ballistic solver accuracy.

Quick Summary

The Tall Target Test verifies scope plumbness and tracking accuracy for long-range shooting. It requires a perfectly level rifle, precise 100-yard distance, and analysis of shot group deviations to calculate correction factors for ballistic solvers.

Chapters

  1. 00:00Intro to Tall Target Test
  2. 00:54Target Options & Leveling
  3. 03:44Measuring Distance & Setup
  4. 08:20DIY Tall Target Construction
  5. 12:00Scope Prep & Ammo Selection
  6. 15:15Executing the Test
  7. 17:57Analyzing Results & Corrections

Frequently Asked Questions

What is the purpose of the Tall Target Test in long-range shooting?

The Tall Target Test is essential for verifying that your rifle scope is mounted perfectly plumb (vertically aligned) and that its internal elevation and windage adjustments track accurately. This ensures your scope's adjustments correspond correctly to the actual point of impact downrange.

How do you properly set up for a Tall Target Test?

Ensure your rifle is perfectly level using an anti-cant device. Measure the distance precisely to 100 yards from the scope turrets. Use a plumb vertical line on your target and mark increments for elevation adjustments.

What is a correction factor in relation to scope tracking?

A correction factor is calculated by dividing the expected measurement (based on scope adjustments) by the actual measured impact point deviation. This factor is used in ballistic apps to compensate for mechanical inaccuracies in the scope's tracking mechanism.

Why is ammunition selection important for the Tall Target Test?

Consistent ammunition is crucial because variations in bullet performance can skew test results, making it difficult to determine if tracking errors are due to the scope or the ammo. Using match-grade ammunition from a known, consistent lot is recommended.

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