The Rio Ammunition RBSM402 Royal BlueSteel Magnum is a 12 gauge magnum shotgun load intended for heavy-payload field use such as waterfowl and turkey hunting or other shotgunning applications that require a larger shot charge. It delivers a 1 3/8 oz payload of #2 shot from a 3-inch shell with a listed muzzle velocity of 1300 fps. Packaging is arranged for retail sale by box and is also available in full-case quantities for bulk needs.
Packaging
Box: The product is sold per box containing 25 rounds for retail purchase.
Case: A case consists of 10 boxes; ordering by the case is achieved by ordering the required number of boxes (10 boxes per case).
Key Specifications
- The gauge is 12 Gauge.
- The shell length is 3-inch.
- The shot weight is 1 3/8 oz.
- The shot size is #2.
- The listed muzzle velocity is 1300 fps.
- Each retail box contains 25 rounds.
- Each case contains 10 boxes.
- The manufacturer is Rio Ammunition.
- The product model/part is listed as RBSM402 Royal BlueSteel Magnum.
This load provides a standardized magnum option in retail box and case quantities for shooters seeking a heavy-payload 12 gauge shell with documented specifications. Its packaging and stated performance make it suitable for those who require consistent, bulk-ordered ammunition for field applications.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.




