SIG P322 & Holosun 407K Red Dot Range Testing!

Published on May 27, 2022
Duration: 14:09

This guide details the process of zeroing a Holosun 407K red dot sight on a SIG P322 pistol, based on expert instruction. It covers mounting, initial adjustments from a bench rest at 25 yards, and subsequent testing at longer distances to confirm accuracy and the effectiveness of the co-witness feature. The speaker, an experienced firearms instructor, emphasizes the practical application of red dot sights for enhanced target acquisition.

Quick Summary

The SIG P322 pistol features an RMSC optics footprint, requiring compatible red dot sights like the Holosun 407K. The 407K offers durable construction, Shake Awake, and side-accessible battery, with a 6 MOA dot ideal for close to medium range, though it can cover targets at 100 yards.

Chapters

  1. 00:00Introduction & Weather Conditions
  2. 00:17Introducing SIG P322 & Holosun 407K
  3. 00:31Holosun 407K Features Explained
  4. 01:43Co-witnessing with Iron Sights
  5. 02:14SIG P322 Optics Footprint (RMSC)
  6. 02:27Range Testing Plan
  7. 02:48Off-Hand 10-Yard Test
  8. 03:22Bench Rest 25-Yard Zeroing
  9. 04:0225-Yard Accuracy Check
  10. 04:5615-Yard Steel Target Test
  11. 05:1025-Yard Steel Target Test
  12. 05:3750-Yard Steel Target Test
  13. 06:1775-Yard Steel Target Test
  14. 06:39100-Yard Steel Target Test
  15. 08:066 MOA Dot Discussion
  16. 08:17Rapid Fire Test at 10 Yards
  17. 09:48Rapid Fire Performance Analysis
  18. 10:13Explosive Target Finale
  19. 11:03Conclusion & Final Thoughts

Frequently Asked Questions

What is the optics footprint for the SIG P322?

The SIG P322 pistol uses the RMSC mounting footprint for optics. This means you will need a red dot sight that is compatible with the RMSC footprint or an adapter plate to mount it securely.

What are the key features of the Holosun 407K red dot sight?

The Holosun 407K boasts solid aluminum construction, is waterproof, dustproof, and parallax-free. It features side-accessible battery, Shake Awake technology, and 10-12 brightness settings controlled by touch.

How do you zero a red dot sight on a SIG P322?

To zero, mount the optic, power it on, and fire a group at 25 yards from a bench rest. Use the sight's adjustment turrets to move the point of impact to match the point of aim, verifying with subsequent shots.

Is the Holosun 407K suitable for pistol use?

Yes, the speaker prefers the Holosun 407K (K-model) for pistols over the 507C (C-model) due to a better sight picture and easier dot acquisition, experiencing less tunnel vision.

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