Weatherby Mark V Accumark — .30-378 Wby Mag

The Weatherby Mark V Accumark — .30-378 Wby Mag is a production-grade precision rifle built for shooters who demand sub-MOA consistency at distances where most cartridges run out of steam. Chambered in the high-velocity .30-378 Weatherby Magnum, this rifle pairs a forged Mark V action with a fluted #3 contour stainless barrel, a TriggerTech field trigger, and a hand-laid Monte Carlo synthetic stock. The combination delivers predictable performance in the field, with recoil tamed by the factory Accubrake muzzle device. Whether you’re stacking steel at 1,000 yards or pursuing game across open country, this rifle puts the round where you aim.

Key Features

• Forged Mark V Action with Integral Rail — The action is machined from a solid block of forged steel, providing a rigid bedding platform. The integral rail eliminates movement between base and receiver, maintaining zero shift after barrel heat cycles.
• Fluted #3 Contour Stainless Barrel — The fluting reduces barrel weight while increasing surface area for faster cooling. The #3 contour balances stiffness and handling, keeping groups tight even during extended strings.
• TriggerTech Field Trigger — A zero-creep, adjustable trigger with a crisp break. The Frictionless Release Technology eliminates trigger pull variance from dirt or grit, giving you a clean, repeatable pull every shot.
• Hand-Laid Monte Carlo Stock with Aluminum Bedding — The synthetic stock is hand-laid for consistent density and features an aluminum bedding block that fully contacts the receiver. This prevents stock flex and maintains consistent pressure on the action screws.
• Accubrake Muzzle Brake — Weatherby’s factory-installed Accubrake reduces felt recoil by up to 53% (per Weatherby specs). This lets you spot your own impacts and stay on target for follow-up shots.

Who It’s For

The Accumark is for the long-range shooter who wants a production rifle that shoots like a custom build. It’s for the hunter who needs a flat-shooting magnum for open country, and the target shooter who demands consistent sub-MOA accuracy from a factory gun. If you reload .30-378 and want a platform that can handle the pressure without compromising precision, this is your rifle.

Pros / Cons

• Pros: Sub-MOA guarantee from factory, TriggerTech trigger is a major upgrade over previous triggers, Accubrake makes the .30-378 manageable, integral rail for stable optic mounting.
• Cons: The .30-378 Wby Mag is a barrel burner — expect to replace the barrel after 800-1,200 rounds of full-power loads. Ammo availability is limited compared to .308 or 6.5 Creedmoor.

Comparison: Weatherby Mark V Accumark vs. Competitors

FAQ

Trust Block

• ✅ Nationwide delivery (all 50 states)
• ✅ Ships 1-2 business days
• ✅ 30-day returns
• ✅ Secure checkout (256-bit SSL)

Last updated: April 2026. According to NSSF data, Weatherby holds approximately 8% of the premium bolt-action rifle market, with the Mark V line accounting for over 60% of their unit sales.

Browse more: Bolt Action Rifles | Precision Rifles | Weatherby Rifles