6.5 Creedmoor SCAR 20S - I hope FN can fix this hot mess!

Published on January 10, 2022
Duration: 16:29

This video details significant reliability issues encountered with the FN SCAR 20S chambered in 6.5 Creedmoor, specifically concerning frequent blown primers. The presenter, an experienced firearms reviewer, documents multiple instances of primers backing out, puncturing, and causing malfunctions that bind the rifle. Despite extensive testing with various ammunition types and even swapping bolts with a known-good 308 SCAR, the problem persisted, suggesting a fundamental design flaw in the 6.5 Creedmoor variant.

Quick Summary

The FN SCAR 20S in 6.5 Creedmoor suffers from frequent blown primers, a significant reliability issue. These primers can puncture and lodge in the firing pin channel or bolt carrier, causing malfunctions that bind the action and prevent proper chambering of rounds. This problem persists across various ammunition types and suggests a potential design flaw specific to the 6.5 Creedmoor variant.

Chapters

  1. 00:10Introduction: SCAR 20S 6.5 Creedmoor Issues
  2. 01:34First Malfunction: Blown Primer
  3. 03:07Clearing the Malfunction
  4. 04:00Recovering the Blown Primer Case
  5. 04:44Stuck Firing Pin Due to Primer
  6. 05:25Identifying the Primer Piece
  7. 06:25Frequency of Malfunctions
  8. 07:14Online Reports of Similar Issues
  9. 07:30Comparison to SCAR 20 308
  10. 08:04More Malfunctions Documented
  11. 09:26Failure to Chamber Round
  12. 10:33Clearing Complex Malfunction
  13. 11:19Day Two Testing and Problems
  14. 11:30Inspection at Definitive Arms
  15. 12:16Testing with 308 SCAR Bolt
  16. 13:03Headspace and Pressure Speculation
  17. 13:39Fundamental Design Flaw Hypothesis
  18. 14:06Disappointment with 6.5 Creedmoor SCAR 20S
  19. 14:36FN Needs to Address Issue
  20. 14:57Match Ammunition Speculation
  21. 15:51Support the Channel

Frequently Asked Questions

What are the main reliability issues with the FN SCAR 20S in 6.5 Creedmoor?

The primary reliability issue observed with the FN SCAR 20S in 6.5 Creedmoor is frequent blown primers. These primers can back out, puncture, and lodge in the firing pin channel or bolt carrier group, causing malfunctions that range from light primer strikes to complete binding of the action, preventing chambering of new rounds.

Is the blown primer issue with the SCAR 20S 6.5 Creedmoor related to specific ammunition?

No, the blown primer issue appears to be independent of ammunition brand. The video documented consistent problems with Winchester, Hornady, Norma, and Federal ammunition, suggesting the fault lies with the firearm's design or manufacturing tolerances rather than the ammunition used.

How does the 6.5 Creedmoor SCAR 20S compare to the 308 version in terms of reliability?

The 308 variant of the FN SCAR 20S has been reported to function flawlessly. In contrast, the 6.5 Creedmoor version exhibits significant and frequent blown primer issues, even when tested with bolts from the 308 model, indicating a problem specific to the 6.5 Creedmoor chambering or its integration into the SCAR platform.

What potential design flaws could cause blown primers in the SCAR 20S 6.5 Creedmoor?

While detailed inspections found no obvious defects, speculation points to the SCAR's unique locking mechanism. The extended duration where the firing pin hole is exposed during unlocking might contribute, especially when combined with potentially softer primers found in match-grade 6.5 Creedmoor ammunition.

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