The Henry Big Boy Side Gate is a lever-action rifle chambered in .38 Special and .357 Magnum with a polished brass receiver, American walnut stock, and a 16.5-inch octagon barrel. The side-loading gate allows topping off the 7+1 capacity tube magazine without removing the plug, which speeds up the process compared to the older muzzle-loading design. 
 

Key Specifications 

• Model: Big Boy Side Gate 
• Caliber: .38 Special / .357 Magnum 
• Action: Lever Action 
• Barrel Length: 16.5 inches (Octagon) 
• Overall Length: 35 inches 
• Capacity: 7+1 rounds 
• Weight: 7.75 lbs 
• Safety Feature: Transfer Bar Safety System 
• Sights: Brass Bead Front & Adjustable Semi-Buckhorn Rear 
• Twist Rate: 1:16 inches 
• Receiver Material: Polished Brass 
• Stock Material/Finish: American Walnut 
   

Detailed Features 

The transfer bar safety system prevents discharge unless the trigger is deliberately pulled. The adjustable semi-buckhorn rear sight paired with the brass bead front allows quick target acquisition and usable precision at hunting ranges. The heavy octagonal barrel profile contributes to perceived muzzle steadiness and reduced felt recoil. The carbine length (35 inches overall) makes it easier to maneuver compared to the full-length Big Boy variants. 
 

Target Audience 

Sport shooters who compete in cowboy action events, hunters pursuing small to medium game, and collectors who appreciate lever-action rifles with traditional brass-and-walnut aesthetics. 
 

Usage Scenarios 

The dual .38 Special / .357 Magnum compatibility lets you train with cheaper .38 Special loads and hunt or compete with .357 Magnum without swapping platforms. At 35 inches overall and 7.75 lbs it is manageable in tight spaces for home defense, though most buyers pick this one up for range work and collecting.

The Henry Big Boy Side Gate .38/.357 in polished brass draws consistent praise across firearm forums, with a few measured criticisms worth noting.

The brass receiver and walnut stock combination gets called out often as a standout in this category. Fit and finish are what most buyers lead with when describing the rifle, and Henry's build quality reputation is reinforced across most reviews. The lever action cycles smoothly with minimal effort, which matters both for fast follow-up shots and for newer shooters developing good technique. The dual caliber compatibility is viewed as a genuine practical benefit. Side gate loading is consistently mentioned as an improvement over traditional tube loading, with shooters appreciating the quicker reloads. Accuracy at typical hunting and range distances gets good marks.

On weight, opinions split: 7.75 lbs is solid for extended carry in the field, but some shooters find it tiring over a long session. Side gate operation quality occasionally comes up as something that could be smoother. Price relative to other lever-action rifles in the segment is mentioned as on the higher side, though most buyers who comment on it still feel the quality justifies the cost.