SIG Sauer P365 Deep Dive (part 2)

Published on July 12, 2018
Duration: 20:47

This deep dive into the SIG Sauer P365, presented by Justin Opinion, focuses on troubleshooting intermittent failures to lock the slide open on the last round. The primary culprit identified is a specific 10-round flat baseplate magazine that came with the pistol. Testing involved various magazines, including new ones and those provided by SIG Sauer, under different loading conditions. The video also touches on primer drag as a recurring symptom, though it hasn't caused malfunctions yet. Despite the magazine issue, the P365 is deemed a good shooter and a viable carry gun, with the problematic magazine excluded from carry rotation.

Quick Summary

The SIG Sauer P365 experienced intermittent failures to lock the slide open, primarily attributed to a specific 10-round flat baseplate magazine. Despite this, the pistol demonstrated overall reliability over 1000 rounds, with no misfires or other malfunctions. Primer drag was observed but did not cause issues.

Chapters

  1. 00:24Introduction: Part 2 Deep Dive
  2. 01:01Magazine Collection and Testing Setup
  3. 02:35Field Testing During Leatherwork
  4. 03:21Single Round Test
  5. 04:23Follower Comparison: Problem vs. New Mag
  6. 05:01Guest Shooter Testing
  7. 07:30Two Rounds Per Magazine Test
  8. 09:09Extended Shooting Session
  9. 10:11Final Rounds Test
  10. 10:37Final Thoughts on P365 Reliability
  11. 11:23Recap: 1000 Rounds of Testing
  12. 12:12Primer Drag Observation
  13. 12:54Approaching 1000 Rounds
  14. 13:51Post-Test Condition and Holster
  15. 14:16P365 Condition After 1000 Rounds (Uncleaned)
  16. 15:07Internal Inspection: Wear and Carbon
  17. 16:12Primer Drag Examples
  18. 17:56Carry Gun Status and Conclusion

Frequently Asked Questions

What was the main issue encountered with the SIG Sauer P365 in this video?

The primary issue was an intermittent failure to lock the slide open on the last round, specifically linked to one particular 10-round flat baseplate magazine that came with the pistol. Other magazines tested did not exhibit this problem.

Did the SIG Sauer P365 have any other malfunctions besides the slide lock issue?

No, aside from the slide not locking open with one specific magazine, the SIG Sauer P365 experienced no other malfunctions like misfires, misfeeds, or extraction/ejection problems over approximately 1000 rounds of testing.

What is primer drag and is it a problem for the SIG Sauer P365?

Primer drag is when the firing pin appears to drag across the primer of a chambered round. While observed on P365 casings, it did not cause malfunctions during testing but is noted as a potential long-term concern for firing pin durability.

How reliable was the SIG Sauer P365 after 1000 rounds without cleaning?

The P365 remained reliable even after approximately 1000 rounds without cleaning. It functioned well despite being dirty and did not experience malfunctions related to fouling or lack of lubrication.

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