My 300 PRC : Part - 6 An Update

Published on April 29, 2026
Duration: 9:01

This video provides an update on a custom 300 PRC build, detailing troubleshooting steps and modifications. The presenter, Ty Savage of Kit Badger, discusses initial build components like a Defiance action, Helix 6 carbon fiber barrel, MDT chassis, and Nightforce ATACR scope. Initial shooting revealed zero-shifting issues attributed to a non-square recoil lug and potential tolerance stacking, which were addressed by Helix 6 Precision truing the action and Unknown Munitions bedding the action into the chassis. The presenter plans to attend Thunder Ranch's mid-range rifle course to further diagnose the system and build confidence.

Quick Summary

A custom 300 PRC rifle experienced zero-shifting issues due to a non-square recoil lug and tolerance stacking. Helix 6 Precision trued the lug, and Unknown Munitions bedded the action into the chassis, resolving these problems and improving accuracy and zero stability.

Chapters

  1. 00:07Introduction & Build Overview
  2. 00:14Custom 300 PRC Build Components
  3. 00:23Defiance Machine Action & Helix 6 Barrel
  4. 00:34MDT Chassis & Nightforce Scope
  5. 00:52AB Suppressor & Hornady Ammunition
  6. 01:04Range Time & Shooting Impressions
  7. 01:21300 PRC Recoil Management
  8. 01:43Weight & Hunting Regulations
  9. 02:00Troubleshooting Zero Shift Issues
  10. 02:34Contacting Helix 6 Precision
  11. 02:54Professional Shooter's Assistance
  12. 03:25Isolating Variables: Optic Swap
  13. 03:42Recoil Lug Truing by Helix 6
  14. 04:05Improved Grouping with Handloads
  15. 04:27Seeking Further Refinement: Unknown Munitions
  16. 04:44Action Bedding into Chassis
  17. 04:57Understanding Tolerance Stack
  18. 06:06Truing Action & Bedding Results
  19. 06:16Zero Tracking Stability
  20. 06:23Custom Build Challenges
  21. 06:46Next Steps: Building Confidence
  22. 07:43Thunder Ranch Training Opportunity
  23. 08:05Gathering Hard Dope
  24. 08:35Conclusion & Future Plans

Frequently Asked Questions

What were the initial problems encountered with the custom 300 PRC rifle?

The custom 300 PRC rifle initially experienced zero-shifting issues, leading to a lack of confidence in its setup. This was attributed to a non-square recoil lug and potential tolerance stacking within the build components.

How was the recoil lug issue on the 300 PRC addressed?

Helix 6 Precision identified that the recoil lug was not perfectly square. They trued it up, which significantly helped to clean up the rifle's grouping and improve its overall performance.

What role did action bedding play in fixing the 300 PRC's performance?

Unknown Munitions bedded the rifle's action into the chassis. This process helped to alleviate issues caused by tolerance stacking, ensuring better alignment and contributing to the rifle's improved stability and zero tracking.

Why is attending Thunder Ranch's mid-range rifle course suggested for this rifle?

Thunder Ranch's mid-range rifle course is an excellent diagnostic tool. It allows shooters to gather legitimate, hard dope by shooting at known distances, which helps build confidence in the rifle system and understand its true capabilities.

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