Sig P365: Radian Ramjet + Afterburner vs Parker Mountain Machine JTTC vs Macro Comp

Published on February 9, 2025
Duration: 18:23

This video compares the recoil mitigation performance of the Radian Ramjet + Afterburner and the Parker Mountain Machine (PMM) JTTC compensators on a Sig P365 platform, using the P365 Macro Comp as a baseline. The presenter conducts 'bro science' testing with various ammunition types and grip configurations, noting differences in recoil impulse, ejection patterns, and ease of maintenance. The Radian Ramjet is generally perceived to offer slightly better compensation, especially with higher-pressure loads, while the PMM is noted for its ability to run a wider variety of ammunition, including lower-velocity loads that choked the Ramjet.

Quick Summary

The Radian Ramjet + Afterburner and PMM JTTC compensators offer distinct advantages for the Sig P365. The Radian provides superior recoil mitigation with hotter loads and easier maintenance, while the PMM demonstrates a wider ammunition compatibility, successfully cycling lighter loads that caused malfunctions with the Ramjet.

Chapters

  1. 00:00Introduction: P365 Compensator Shootout
  2. 00:15Baseline: P365 Macro Comp
  3. 00:27Competitor 1: PMM JTTC Compensator
  4. 00:35Competitor 2: Radian Ramjet + Afterburner
  5. 01:35Radian Ramjet + Afterburner System Overview
  6. 02:30PMM JTTC Compensator Overview
  7. 03:39Sig Macro Comp Baseline Overview
  8. 04:56Test Setup and Ammunition
  9. 05:20Testing with Winchester White Box
  10. 07:10Testing with Federal HST 147gr
  11. 09:36Testing with Smaller Grip Module
  12. 11:46Recoil Spring Swap and PMM Test
  13. 13:18Back-to-Back Comparison with Macro Grips
  14. 14:08Ammunition Variety Testing
  15. 15:14Buffalo Creek 147gr HP Test
  16. 16:05Nosler ASP 124gr Test
  17. 16:34Final Comparison and Verdict
  18. 17:10Ejection Pattern Discussion
  19. 17:27Maintenance and Ease of Use
  20. 17:53Viewer Input and Conclusion

Frequently Asked Questions

What are the main differences between the Radian Ramjet and PMM JTTC compensators for the Sig P365?

The Radian Ramjet features a larger expansion chamber for potentially better recoil reduction, while the PMM JTTC has a smaller chamber but demonstrated a wider operating window with various ammunition types. The Radian system also includes a backstrap and magwell, and is easier to clean than the PMM, which may require a vice.

How do the Radian Ramjet and PMM JTTC affect recoil on the Sig P365?

Both compensators aim to reduce recoil. The Radian Ramjet is perceived to offer slightly better compensation, especially with higher-pressure ammunition. The PMM JTTC also significantly softens recoil, making the firearm noticeably softer to shoot compared to the stock Macro Comp.

Which Sig P365 compensator is easier to maintain?

The Radian Ramjet + Afterburner system is significantly easier to maintain. It can be disassembled for cleaning by simply loosening a cross pin. The PMM JTTC compensator, however, is more difficult to remove and clean, often requiring a vice and more effort.

Can the Radian Ramjet and PMM JTTC compensators handle all types of ammunition in a Sig P365?

Not necessarily. The PMM JTTC showed a broader operating window, successfully cycling lower-velocity ammunition like Buffalo Creek 147gr that caused malfunctions with the Radian Ramjet. The Ramjet performed better with higher-pressure loads but choked on some lighter loads.

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