Mossberg 590RM Review & Thunder Ranch Burn Down Test

Published on June 14, 2025
Duration: 18:27

This review details the Mossberg 590RM's performance during a 500-round burn down test at Thunder Ranch, featuring insights from Clint Smith and James Reeves. While the shotgun demonstrated improved reliability after a break-in period and achieved impressive speed test results, potential users should consider the added bulk and cost of magazines, as well as specific ammunition sensitivities and ergonomic differences from traditional tube-fed models. The review highlights both the strengths and potential drawbacks of this magazine-fed variant.

Quick Summary

The Mossberg 590RM is a magazine-fed, pump-action shotgun featuring AR-style controls and a rotating safety. While it requires a break-in period for optimal reliability, it demonstrated impressive speed test results. However, users should be aware of potential ammunition sensitivities and ergonomic differences compared to traditional tube-fed shotguns.

Chapters

  1. 00:41Introduction to Mossberg 590RM
  2. 01:20Burn Down Context & Reliability
  3. 02:40Clint Smith Interview & Initial Impressions
  4. 05:45Technical Features Overview
  5. 08:01Reliability and Break-in Period
  6. 11:10Speed Shooting Test Results
  7. 11:42Controls and Ergonomics Discussion
  8. 13:40Ammunition Sensitivity Issues
  9. 16:18Magazine Durability and Handling Issues
  10. 17:30Pricing and Conclusion

Frequently Asked Questions

What is the Mossberg 590RM and what makes it unique?

The Mossberg 590RM is a magazine-fed, pump-action shotgun. Its key features include an AR-style safety selector, a rotating safety mechanism derived from government contracts, and a double-stack box magazine, differentiating it from traditional tube-fed shotguns.

How reliable is the Mossberg 590RM, especially after a break-in period?

During a 500-round burn down test, the 590RM initially experienced a gritty action and some follower freeze-ups. However, after approximately 300 rounds, the action smoothed out considerably, indicating a need for a break-in period for optimal performance.

What were the main ergonomic criticisms of the Mossberg 590RM?

Reviewers noted that the rotating safety requires breaking grip more than a traditional tang safety. Additionally, the forend features a very aggressive texture, described as a 'cheese-grater,' which some users might find uncomfortable.

Did the Mossberg 590RM experience any ammunition-related issues?

Yes, the shotgun exhibited failures to eject specifically with Fiocchi Target Max ammunition. This issue was also observed on other firearms tested that day, suggesting it might be related to the ammunition itself rather than solely a firearm defect.

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