The Iver Johnson 600 is an over/under break-action shotgun chambered in 12 Gauge with a 28-inch ventilated rib barrel and a 3-inch chamber. It has a walnut stock, black finish receiver with engraving, and includes ejectors. The 2-round over/under configuration is set up with a CT-5 choke system. 
 

Key Specifications 

• Brand: Iver Johnson 
• Model: 600 
• Caliber: 12 Gauge 
• Action: Break Action 
• Capacity: 2 rounds 
• Barrel Length: 28 inches 
• Color/Finish: Black / Walnut 
   

Detailed Features 

• Over/under barrel layout with ventilated rib 
• 28-inch barrel with 3-inch chamber 
• CT-5 choke system as listed by vendors 
• Engraved receiver with walnut stock 
• Automatic ejectors for fast cycling

Owners of the Iver Johnson 600 often cite the walnut stock and engraved receiver as selling points at the price. The ventilated rib and CT-5 choke system give it enough flexibility for different field or clay shooting scenarios. General feedback on fit and finish is positive for the segment.

The 28-inch barrel and 3-inch chamber combination draws approval from shooters who use it for upland game or clay work. A few owners note the action is on the stiffer side when new and requires some break-in before it cycles smoothly. The ejectors work reliably once broken in.

The 600 sits in a crowded over/under market, and buyers weigh it against Turkish and Spanish competitors at similar price points. The Iver Johnson name generates some nostalgia, but current production models are evaluated on their own merits. Most owners find it adequate; those expecting premium-grade wood or action fit sometimes look elsewhere.