Weatherby Mark V Accumark .338-378 Wby Mag RH Rifle - Matte Gel Coated Black Finish

The Weatherby Mark V Accumark in .338-378 Wby Mag is a purpose-built long-range hunting rifle designed for shooters who demand both precision and stopping power. Chambered in one of Weatherby's most potent magnum cartridges, this right-hand rifle combines a fluted 26-inch barrel, hand-laid fiberglass stock, and aluminum bedding blocks to deliver the accuracy and durability serious hunters expect from a premium magnum rifle. The Accumark is engineered to handle the extreme velocities and recoil of the .338-378 Magnum while maintaining the mechanical advantages of Weatherby's proven Mark V action.

Built around Weatherby's modular Mark V platform, the Accumark comes fitted with a raised Monte Carlo fiberglass stock featuring spider-web accents and a matte gel coat finish that resists glare and weathering. The fluted barrel runs a 1-in-10 twist rate optimized for the heavy projectiles this magnum demands, while the two-toned finish—stainless barrel with Graphite Black Cerakote receiver, bolt, and safety—keeps the rifle visible in low light and highly corrosion-resistant. The stock geometry, with its specific length of pull and drop measurements, is designed to control recoil while maintaining consistent sight picture. Magazine capacity runs 2+1, so you're carrying a reliable reserve round plus one in the chamber.

The .338-378 Wby Mag is not a whitetail cartridge—it's built for elk, moose, and other large game where a premium magnum performs its purpose. The Accumark's combination of precision bedding, quality metallurgy, and refined ergonomics means you're investing in a rifle that will deliver consistent accuracy at extended range and the terminal performance that magnum hunters expect. Whether you're glassing from a ridge line or taking a long shot across a canyon, the Accumark is engineered to close the distance.

Key Features

• Fluted #3 contour barrel (26 inches) with 1-in-10 twist for magnum accuracy
• Two-toned finish: stainless barrel with Graphite Black Cerakote receiver, bolt, and safety
• Hand-laid raised Monte Carlo fiberglass stock with matte gel coat and spider-web accents
• Aluminum bedding blocks for rigidity and repeatability
• Right-hand action with ergonomic safety and bolt knob
• 2+1 magazine capacity

Specifications

Frequently Asked Questions

Is the Weatherby Mark V Accumark suitable for a beginner magnum shooter?

The .338-378 Wby Mag is a premium cartridge with substantial recoil, typically reserved for experienced shooters hunting large game. The Accumark's fiberglass stock and bedding blocks help manage recoil, but this rifle is best suited to hunters already comfortable with magnum rifles. If you're new to magnums, consider working with a qualified instructor or starting with a more moderate cartridge.

What is included with the rifle?

The rifle ships as a complete, ready-to-fire unit. Optics, ammunition, and accessories are not included and must be purchased separately. You'll need to select a high-quality scope and rings suitable for magnum recoil.

Can I use the Accumark platform for custom builds or barrel changes?

The Weatherby Mark V is built on a modular receiver platform that supports both 6-lug and 9-lug variations, making it one of the more customizable rifles in the Weatherby line. Consult a qualified gunsmith for any custom modifications or barrel work.

What is the best use case for this rifle?

The Accumark in .338-378 Wby Mag is engineered for long-range hunting of large game such as elk and moose, where its magnum performance and precision accuracy deliver the energy and consistency required for ethical, one-shot harvests at extended distances.