The Rossi RM66 is a 6-shot DA/SA revolver chambered for .357 Magnum and .38 Special +P. With a 6-inch barrel and satin stainless frame, it weighs 34.40 oz unloaded and measures 11.14 inches overall. The satin stainless finish resists corrosion, and the medium frame keeps the weight manageable for its barrel length. 
 

Key Specifications 

• Model: RM66 
• Caliber: .357 Magnum / .38 Special +P 
• Action Type: Single/Double Action (DA/SA) 
• Barrel Length: 6 inches 
• Capacity: 6 Rounds 
• Weight: 2.15 lbs (34.40 oz unloaded) 
• Overall Length: 11.14 inches 
• Finish: Satin Stainless Steel 
• Grip Material: Black Checkered Rubber 
   

Detailed Features 

The DA/SA mechanism gives you the choice between a lighter single-action pull for deliberate aimed fire and the heavier double-action pull for faster cycling. The serrated front sight is detachable, and the rear sight is adjustable, which gives real flexibility for different loads and distances. The checkered rubber grip helps absorb recoil with full-power .357 loads.

The RM66 in satin stainless gets a generally positive reception from revolver enthusiasts, though with some honest caveats about quality consistency that come up in longer owner discussions.

The satin stainless finish draws consistent praise for both its looks and its practical corrosion resistance. The 6-inch barrel is specifically cited by target shooters and hunters who want the extra velocity and sight radius it provides. The DA/SA action gets positive marks for feel and smoothness from most owners.

Where the feedback gets more cautious: some owners report quality control variability. Cylinder timing and alignment issues appear in a subset of units, and the fit and finish doesn't always match domestic revolver brands at comparable prices. Aftermarket support is more limited than for S&W or Ruger revolvers. For the price point, many still find the RM66 a reasonable value, but buyers who prioritize absolute consistency tend to note these concerns.