The Weatherby 18i Deluxe is a 20-gauge semi-automatic shotgun with an inertia-operated action, 26-inch barrel, nickeled aluminum receiver, and fixed walnut stock. It weighs 6 lbs. and holds 2+1 rounds in a 3-inch chamber. 
 

Key Specifications 

• Model: 18i Deluxe 
• UPC: 747115436644 
• Gauge: 20 GA 
• Action: Semi-Automatic 
• Barrel Length: 26 inches 
• Capacity: 2 +1 Rounds (3" chamber) 
• Overall Length: 47.5 inches 
• Weight: 6 lbs. 
• Receiver Material: Nickeled Aluminum 
• Stock Type: Fixed Walnut Stock 
• Sights: Fiber Optic Front Sight 
   

Detailed Features 

The inertia-operated action cycles reliably with minimal maintenance compared to gas systems, and produces less felt recoil than gas-operated alternatives. The walnut stock is fitted with good grip texture for stability. A vent rib barrel improves sight alignment for clay shooting. Crossbolt safety is the standard configuration. Fiber optic front sight aids target acquisition across light conditions. 
 

Target Audience 

Upland hunters and clay shooters who want a light 20-gauge semi-auto with the aesthetic of a walnut stock and the reliability of an inertia action. At 6 lbs it is among the lighter semi-autos in the category. 
 

Usage Scenarios 

Upland bird hunting where the 6 lb weight reduces carry fatigue over long days. Clay shooting where quick follow-up shots and good balance are priorities. The inertia action's low-maintenance design suits hunters who don't want a gas system to clean after every trip.

The 18i Deluxe earns consistent appreciation for the walnut stock's appearance and the overall fit and finish quality. Owners describe it as looking and feeling like a more expensive gun than it is.

The inertia action's performance is a frequent positive - smooth cycling, minimal felt recoil, and clean operation across a range of loads. Balance and ergonomics also get praise from upland hunters who value a gun that swings naturally.

The 20-gauge format is specifically noted as a positive for shooters who want manageable recoil without giving up versatility. New and intermediate shooters mention this as an accessible entry into semi-auto shotguns.

Price relative to comparable semi-autos is occasionally noted as a consideration. Customer service experiences with Weatherby get mixed mentions, with some owners reporting positive warranty interactions and others noting slower response times. Overall sentiment reflects satisfaction with performance and aesthetics, with cost and support as the main variables.