The Cimarron Firearms 1866 Yellowboy is a lever-action rifle built on the classic design with a brass frame and walnut stock. Chambered in .38 Special, it handles well at the range or in the field, with recoil that won't punish you. The 18-inch barrel keeps things maneuverable, and the 10-round capacity is respectable for the format. 
 

Key Specifications 

• Action Type: Lever  
• Barrel Length: 18 inches  
• Caliber: .38 SPL  
• Capacity: 10 rounds  
• Condition: New in Box  
• Finish Per Color: Wood / Brass  
• Manufacturer: Cimarron Firearms  
• Model: 1866 Yellowboy  
   

Features 

• Brass frame and buttplate with a traditional aesthetic and solid construction 
• Walnut straight stock with a comfortable, natural feel 
• Dovetail blade front sight and semi buckhorn rear sight for quick target acquisition 
• External hammer firing system for a straightforward, traditional manual of arms 
   
  The 1866 Yellowboy works well for Cowboy Action Shooting, casual range use, and small-to-medium game. Collectors drawn to 19th-century lever guns will find the fit and finish on par with Cimarron's usual standards.

Owners of the Cimarron 1866 Yellowboy in .38 SPL tend to appreciate it most for its authentic look. The brass receiver and walnut stock give it the kind of period-correct appearance that modern reproductions often miss. The lever action is generally described as smooth, and .38 Special is easy on the shoulder, which makes for an enjoyable range session.

The practical conversation comes up too. Some users note it's not a workhorse defensive rifle, and .38 Special availability can vary by region compared to more common chamberings. The consensus is that it fills a specific role well (Cowboy Action Shooting, light hunting, or simply owning something that looks good on the rack) rather than serving as an all-purpose firearm. People who buy it knowing that tend to be satisfied.