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Rio Ammunition

Royal BlueSteel MGN 20, 20 Gauge 3" 1oz 1400FPS

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Rio's parent company MAXAM is a global leader in the explosives industry and supplies munitions to civil, military, and sporting markets in more than sixty countries. In June 2015 Rio opened a start-of-the-art 105,000 square foot North American facility in Marshall, Texas assembling a wide range of hunting and target loads for the North American market.

Rio Royal BlueSteel is loaded with perfectly spherical steel shot for use where regulations call for lead-free shotshells. It's ballistically engineered to retain energy down range and generates less pressure, a more consistent pattern and better efficiency than competing brands.


  • Gauge: 20
  • Shell Length: 3"
  • Load: 1 ounce
  • Muzzle Velocity: 1400FPS


  • Powder: SSB+ 150
  • Brass head 16mm
  • Iron shot / more soft
  • For aquatic game and recommended for wetland areas

Sold by the case. 25 rounds per box, 10 boxes per case, for a total of 250 rounds per case.

Ammunition Notice:

You must be 18 or older to purchase ammunition. All ammunition will be shipped via UPS Ground. Continental United States only. For safety reasons, we do not accept returns on ammunition. Always make sure you use the correct ammunition for your specific firearm. If you have any questions about our ammunition working for your firearm feel free to call us, (816) 883-4545

Click here to check restrictions and conditions on the sale of shotgun shells.

  • Illinois Residents. We must have your FOID Card AND Drivers License on file before we can send ammunition to Illinois. You can email your cards to
  • California Residents. We can only ship to an FFL and must have a copy on file before we ship. You can send a copy of the FFL to
  • We can no longer ship to New York Residents.
Royal BlueSteel MGN 20, 20 Gauge 3" 1oz 1400FPS

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