The Browning AB3 Pro is a bolt-action rifle chambered in .300 Win Mag with a 26-inch spiral fluted threaded barrel finished in matte blued steel. It has a drilled and tapped steel receiver and a fixed gray/green synthetic composite stock. Capacity is 3+1 rounds. 
 

Key Specifications 

• Brand: Browning 
• Model: AB3 Pro 
• Caliber: .300 Win Mag 
• Action: Bolt Action 
• Capacity: 3+1 
• Barrel Length: 26" 
• Color/Finish: Matte Blued / Gray/Green 
   

Detailed Features 

• 26-inch spiral fluted threaded barrel in matte blued steel 
• Drilled and tapped steel receiver 
• Fixed gray/green synthetic composite stock 
• 3+1 round capacity

Owners of the AB3 Pro in .300 Win Mag generally appreciate the spiral fluted barrel, which adds visual interest and sheds a bit of weight on an otherwise full-size magnum platform. The threaded muzzle is seen as a practical addition for those who want to run a muzzle device. Most describe the bolt as smooth and reliable out of the box.

The gray/green synthetic stock is a point of divided opinion. Some hunters find the color a sensible field choice; others feel the stock lacks the rigid feel of higher-end composites. The fixed stock means no adjustability, which comes up frequently in reviews from shooters with non-standard proportions.

At its price tier the AB3 Pro competes with several well-regarded bolt guns in .300 Win Mag. Buyers who prioritize the threaded barrel and spiral fluting tend to feel the value is there; those comparing it against entry-level competitors on pure accuracy potential sometimes expect more for the money.