The Taurus Model 66 is a full-sized DA/SA revolver chambered in .357 Magnum with a 4-inch barrel, 7-round capacity, and a matte stainless steel finish. It also accepts .38 Special, giving a lighter practice option in the same cylinder. 
 

Key Specifications 

• Caliber: .357 Magnum / .38 Special 
• Barrel Length: 4 inches 
• Capacity: 7 rounds 
• Weight: 38 oz (2.4 lbs) 
• Length: 10.5 inches 
• Sights: Front Fixed / Rear Adjustable 
• Grip Material: Rubber with finger grooves 
• Action Type: Double/Single Action 
• Finish: Matte Stainless Steel 
• Safety Features: Taurus Security System & Transfer Bar 
   

Detailed Features 

The .357 Magnum chambering handles full-power defensive loads, and the stainless steel construction resists corrosion for a gun that may see outdoor use or humid storage. The matte finish reduces glare. 
 
The Taurus Security System uses a key to lock the action completely. The transfer bar prevents the hammer from contacting the firing pin unless the trigger is pulled fully through. 
 
The DA/SA trigger gives the choice between a longer double-action pull or cocked single-action for more precise shots. Adjustable rear sight lets you tune point of impact. Rubber grips with finger grooves help control recoil from heavier .357 Magnum loads. 
 
At 10.5 inches and 38 oz., this is a range, competition, or home defense revolver rather than a practical carry gun.

The Taurus 66 .357 Magnum with 4-inch barrel draws mixed reviews that lean positive on performance and value.

Build quality is the consistent strength. The stainless steel finish gets specific praise for wear and corrosion resistance, and most owners describe the overall construction as solid.

Accuracy at medium distances is generally rated good, with the fixed front and adjustable rear sights considered adequate for most practical shooting.

The dual-caliber capability with .38 Special is a frequently cited advantage. It makes the gun more versatile and keeps practice costs down.

The 7-round cylinder stands out positively compared to most 6-shot .357 revolvers.

Value is widely seen as strong relative to the price.

On the negative side: heavy double-action trigger pull is the most common complaint, and some users find it reduces practical accuracy. Finish wear and scratches appear over time on some guns. Weight at 38 oz. is noted as a drawback for carry. Customer service experiences with Taurus vary considerably, and parts availability for this model is a minor concern for some owners.