Description
The Weatherby Mark V Accumark RC, .338-378 Wby Mag, 28″ Fluted, Stainless, Composite Stock is a premium, long-range hunting rifle built for extreme power and distance. It combines a robust, fluted stainless steel barrel with a lightweight composite stock and Weatherby’s reliable Mark V action, engineered for high-pressure magnum cartridges. This setup is designed for hunters and shooters who need maximum downrange energy for the largest game or long-distance target work.
Key Features
- Chambered in the potent .338-378 Weatherby Magnum cartridge for extreme long-range performance.
- 28-inch fluted stainless steel barrel for heat dissipation and weight reduction.
- Durable, weather-resistant composite stock with an integrated bedding block for stability.
- Mark V controlled round feed action with 9 locking lugs for strength and smooth operation.
- Accumark contour barrel and recessed target crown for enhanced accuracy.
Specifications & Details
| Caliber | .338-378 Weatherby Magnum |
| Barrel | 28″, Fluted, Stainless Steel |
| Action | Mark V Controlled Round Feed |
| Stock | Composite with Aluminum Bedding Block |
| Magazine Capacity | 3+1 Rounds |
| Overall Length | Approx. 49.5″ |
Let’s talk budget-conscious value. At $1947.29, this isn’t an impulse buy—it’s a serious investment in a specialized tool. The price positions it against custom-built long-range rigs, which often start well above $3,000. You’re paying for a complete, ready-to-shoot system from a legacy brand. The real value question is whether you need the specific performance of the .338-378 cartridge, which delivers blistering velocity and energy but comes with significant recoil and ammo costs. Compared to a standard .300 Win Mag, you’re getting more power at distance, but you’ll pay for it with every trigger pull. The rifle itself is built to handle that power for a long time, with a robust action that’s drop-in ready for serious optics, requiring no gunsmithing for a proper scope mount installation using standard rings compatible with platforms like Nightforce or Leupold Mark 4 bases.
Who This Rifle Is For
This is for the hunter pursuing elk, moose, or large bear at extended ranges where other magnums start to fade. It’s also for the long-range steel target shooter who wants to push boundaries beyond 1000 yards with authority. It is not a general-purpose deer rifle; it’s a specialist’s tool. The weight, around 8.5 lbs unscoped, helps manage recoil but still makes it a handful to carry all day in steep terrain. That said, if your goal is to place a powerful shot accurately at distances where other hunters pack up, this is the platform built for it.
Pros & Cons
Pros: Unmatched downrange energy for its class; excellent out-of-the-box accuracy potential; stainless/fluted barrel resists corrosion and cools faster; composite stock is stable in all weather; the Mark V action is famously strong and smooth.
Cons: Ammunition is expensive and can be hard to find locally; recoil is substantial, demanding good technique and a muzzle brake or suppressor for most shooters; the 28-inch barrel makes it less maneuverable in tight brush; it’s a niche cartridge without the widespread support of a .300 Win Mag.
Frequently Asked Questions
Q: How does the .338-378 compare to a .338 Lapua Magnum?
A: They are ballistic peers. The .338-378 often has a slight velocity edge, but the .338 Lapua has broader ammunition and component availability. The choice often comes down to which rifle platform you prefer and ammo sourcing.
Q: Is the stock adjustable or bedded?
A: The stock is a fixed composite design, but it features an aluminum bedding block system. This provides a rigid, stable interface between the action and stock, promoting consistent accuracy without the need for aftermarket bedding.
Q: What kind of scope and mount do I need?
A: You’ll need a high-quality, long-range scope built to handle heavy recoil. A 30mm tube with adjustable parallax is a good start. Mount it using premium, matched rings and bases—like those from Warne or Seekins Precision—to ensure it stays zeroed. Remember, FFL transfer required for firearm purchases when ordering online.
For the shooter who has a specific need for extreme long-range power, the Weatherby Mark V Accumark RC represents a turn-key solution that avoids custom shop prices. It’s a lot of rifle for the money, but only if its specific capabilities match your requirements. Available at firearms-missouri.com for Missouri residents and nationwide.
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