The Henry Big Boy Brass Side Gate is a lever-action rifle chambered in .357 Magnum, also accepting .38 Special. It has a 20-inch octagonal barrel, a polished brass receiver, and an American walnut stock. Capacity is 10+1 rounds. It weighs 8.68 lbs and measures 38.5 inches overall. The front sight is a brass bead; the rear is a fully adjustable semi-buckhorn with a diamond insert. The side gate loading port allows topping off the magazine without removing rounds already in the tube. 
 

Key Specifications 

• Model: Big Boy Brass Side Gate 
• Caliber: .357 Magnum / .38 Special 
• Barrel Length: 20 inches 
• Action Type: Lever Action 
• Capacity: 10+1 rounds 
• Weight: 8.68 lbs 
• Overall Length: 38.5 inches 
• Stock Material: American Walnut 
• Receiver Material: Polished Brass 
• Sights: Front: Brass Bead; Rear: Fully Adjustable Semi-Buckhorn with Diamond Insert 
   
  The octagonal barrel profile adds balance toward the muzzle. The brass receiver is a defining visual feature and holds up well over time with proper care. The .357 Mag / .38 Special combination means you can load lighter .38 Special rounds for casual range sessions and full-power .357 Mag when it matters. The side gate is a notable functional upgrade over loading-gate-only designs, allowing faster topping off in the field.

Buyers of the Big Boy Brass Side Gate appreciate both its look and practical performance. The polished brass receiver and walnut stock combination draw consistent positive comments, and the lever action cycles smoothly for fast follow-up shots.

Accuracy is well-regarded at ranges appropriate for the .357 Mag cartridge. The .38 Special compatibility is frequently cited as a practical advantage for practice. Weight at 8.68 lbs is the most common functional concern, with some hunters noting it becomes noticeable on long carries. Recoil with the .357 Mag is manageable in this platform. Henry's customer service is mentioned favorably in most discussions involving warranty or service questions. Price relative to other lever-actions in this caliber is sometimes questioned, though most buyers feel the build quality and brass receiver justify the cost.