Henry H012GMAW Big Boy All-Weather Side Gate 357 Mag/38 Spl 20″ Barrel


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SKU: HENH012GMAW Categories: , Tag:

Big Boy rifles in “revolver” calibers established the original reputation of our centerfire models. These All-Weather versions let you hunt in the rain and the snow with no fear of creeping rust. We have further upgraded these rifles to include a side loading gate for rapid magazine top-off while retaining our original removable tube magazine for safer unloading. These slick, tough rifles come in three calibers, all with 20-inch round barrels for the long sight radius and maximum ballistic performance.

The barrel, the receiver, the lever, and the magazine are all hard chrome plated for ultimate durability in the elements. The tough moisture-resistant industrial-grade coating seals the hardwood fore-end and straight-wrist stock against rain, sleet, and snow. They fit saddle and ATV scabbards snugly, and the tough finish shrugs off moisture and abrasion. Range-adjustable semi-buckhorn rear and brass bead front sights give a high-contrast for aiming even in low light. For longer range hits, All-Weather Big Boys are drilled and tapped for optic mounts. An automatic in-hammer transfer bar safety makes them drop safe.

Paired with a trusty revolver in the same caliber, these rifles make the most of Cowboy Logistics. Long barrels produce a substantial velocity increase with Magnum pistol cartridges, edging into conventional rifle territory while offering greater tube magazine capacity and shorter lever throws thanks to shorter cases. 10+1 tube magazine capacity provides ample firepower for hunting or defense.

Smooth, dependable actions and inherent accuracy of Henry barrels add up to enjoyable handling and effective performance on game and paper targets alike. Get a rifle that’s more than a “fair-weather companion”: get a Henry All-Weather Big Boy!



Canada Legal Classification Non-Restricted Action Lever
Handedness Right Optic Interface Drilled and Tapped BB-RSM
Rear Sight Fully Adjustable Semi-Buckhorn w/ Diamond Insert Front Sight Drift Adjustable Brass Bead
Grip Type Stock Integrated Straight Pistol Grip Cap N/A
Trigger Type Standard Trigger Compatiblity Henry H012, H006
Min Trigger Pull (lbs) ~5 Max Trigger Pull (lbs) ~5
Observed Trigger Pull (lbs) ~5 Safety Transfer Bar
Manual Safety Position N/A Magazine Interface Fixed Tube
Magazine Compatibility Henry H012M, H006M Capacity 10
Default Length (in; mm) 37.5; 952.5 Min Length (in; mm) 37.5; 952.5
Max Length (in; mm) 37.5; 952.5 Width (in; mm) ~1.4; 3.5
Height (in; mm) ~9.4; 240 Weight (lbs; kg) 7.00; 3.17515
Accessory Interface Sling Stud Buttstock, Forearm Cap


Lever Throw Angle (Degrees) ~80 Action Size Standard
Receiver Type H012GM Lower Receiver Material Steel
Lower Receiver Finish Industrial Hard Chrome Satin Upper Receiver Material Steel
Upper Receiver Finish Industrial Hard Chrome Satin Stock Interfacing Mechanism Rear Tang Screw Threaded Into Receiver
Stock Interfacing Mechanism Material Steel Stock Interfacing Mechanism Finish Chrome Satin
Barrel Interfacing Mechanism Direct to Receiver Barrel Securing Mechanism Barrel Threads
Barrel Securing Mechanism Material Steel Barrel Securing Mechanism Finish Chrome Plated
Recoil Lug None Recoil Lug Material N/A
Recoil Lug Finish N/A Feed Type Push
Ejection Spring Loaded, Receiver Mounted Ejection Direction Right
Bolt Type 1 Piece Bolt Bolt Material Steel
Bolt Finish Blued Bolt Head Type Fixed to Bolt
Bolt Lock Rear Locking Block Operating Handle Lever
Operating Handle Material Steel Operating Handle Finish Industrial Hard Chrome Satin
Bolt Hold Open None Bolt Release None
Trigger Guard Type Action Lever Trigger Guard Material Steel
Trigger Guard Finish Industrial Hard Chrome Satin Trigger Guard Engraving None
Magazine Release Type None Magazine Release Position N/A
Magazine Cutoff None Anti-Release Magazine Lock Mechanism Magazine Locking Notch


Stock Type Straight Grip Stock Fit Henry H012G, M (non-X); H009 (non-X), H010BG, H024
Stock Material Hardwood Stock Finish Stained Black
Buttpad Rubber Solid Recoil Pad Black Adjustable Length of Pull No
Default Length of Pull (in; cm) 14; 35.56 Min Length of Pull (in; cm) 14; 35.56
Max Length of Pull (in; cm) 14; 35.56 Adjustable Comb No
Min Drop at Comb (in; cm) ~0.8; 2 Max Drop at Comb (in; cm) ~0.8; 2
Min Drop at Heel (in; cm) ~1; 2.5 Max Drop at Heel (in; cm) ~1; 2.5
Adjustable Cast No Adjustable Pitch No


Forend Type Mounted to Receiver Forend Fit Henry H012, H009 (non-B or GCC), H010 (non-B or GCC), H018
Forend Material Hardwood Forend Finish Satin w/ Industrial Chrome Satin Forend Cap


Barrel Length (mm) 508 Caliber Marking .357 MAG/.38 SPL
Chamber Size Standard Pressure Rating Standard 357 Mag
Barrel Profile Round Barrel Material Steel
Barrel Finish Chrome Plated Chamber Finish Standard
Rifling 6 Groove Twist Rate (in) 1:16
Muzzle Device None Muzzle Thread (in) None

Additional Information:

Model Number H012GMAW
Distributor Item Number 1524-0220


Manufacturers, importers, suppliers, and distributors may make changes to their products without fanfare. Such changes can lead to discrepancies between the advertised product and the actual product in inventory. While International Shooting Supplies Ltd. endeavors to correctly describe the actual product in inventory, we will not be responsible for unintentional inaccuracies in text and images of the advertised product

Weight 4 kg
Dimensions 102.4 × 17.2 × 5.3 cm

357 Magnum, 38 Special





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