Weatherby Mark V Deluxe .30-378 Wby Mag 26″ Blued Walnut
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About this product
The Weatherby Mark V Deluxe .30-378 Wby Mag 26″ Blued Walnut is a high-end production bolt-action rifle designed for extreme long-range hunting and precision shooting in harsh conditions. It builds on Weatherby's reputation for overpressure cartridges and robust nine-lug actions, but this specific Deluxe configuration introduces a suite of modern performance features into a traditionally-styled platform. Here's what you need to know before committing to one of the most powerful commercially-available .30-caliber cartridges.
What is the Weatherby Mark V Deluxe used for?
The Mark V Deluxe .30-378 is engineered for terminal ballistics at distances beyond 600 yards on large game like elk, moose, and brown bear. Its 26-inch barrel is optimized to extract maximum velocity from the overbore .30-378 Weatherby Magnum case, which typically pushes a 200-grain bullet at 3,150 feet per second, delivering over 4,400 ft-lbs of muzzle energy. This makes it effective in open-country mountain hunts or plains where shots exceed 400 yards, though the significant recoil and 48.75-inch overall length make it poorly suited for dense timber.
How does the Weatherby Mark V Deluxe compare to the Stevens 334 Rifle?
The Mark V Deluxe is a purpose-built, premium magnum platform, while the Stevens 334 in .308 Win is a cost-effective, general-purpose utility rifle. The Weatherby's nine-lug action is significantly stronger, built to handle sustained pressure near 65,000 PSI, compared to the Stevens' more conventional two-lug system. For long-range power, the .30-378 outperforms the .308 by roughly 1,000 ft-lbs of energy at 500 yards, but it also costs nearly three times as much and burns about 90 grains of powder per round versus 45.
What does it weigh and what are the dimensions?
This rifle weighs 8.25 lbs without optics, has an overall length of 48.75 inches, and the barrel itself measures 26 inches with a 5/8"-24 thread pattern. The weight is front-heavy due to the long, fluted barrel profile, with the balance point located approximately 5 inches ahead of the front action screw. When scoped with a typical 34mm tube long-range optic and mounted in a bipod, the total system weight often exceeds 11.5 lbs, which is a consideration for backcountry packing.
Who is this NOT for?
This rifle is not for new shooters, budget-conscious hunters, or anyone sensitive to heavy recoil. The .30-378 generates over 40 ft-lbs of free recoil energy in an 8.25-lb rifle, which is punishing without proper technique and the included Accubrake ST. It is also a poor choice for a dense-forest deer rifle where shots are under 100 yards; the long barrel is cumbersome, and the cartridge's power is excessive, causing massive meat damage. Finally, at $3,000, its cost-per-shot is high, with premium ammunition regularly exceeding $7 per round.
What's in the box?
The rifle ships with one 2-round detachable box magazine, the installed Accubrake ST muzzle device, and a set of factory-installed scope base screws. Weatherby does not include a hard case; the rifle is packed in a cardboard carton with foam inserts. You will need to purchase scope bases separately, as the receiver is drilled and tapped for a standard Remington 700 long-action footprint pattern, requiring specific #8-40 screws that are 0.375 inches in length for proper engagement.
Is the Weatherby Mark V Deluxe worth it at $2999?
Yes, but only if your specific use case justifies its specialized magnum chambering and premium finish. At this price point, you are paying for the hand-fitted AA walnut stock, the proven Mark V action integrity, and the performance ceiling of the .30-378 cartridge. For a shooter who needs this level of power and is willing to manage its recoil and ammunition cost, it is a defensible investment. For most hunters, a standard .300 Win Mag or even a .243 Win for smaller game will be more practical and economical.
Specs at a glance
Pros & cons
What works
- Action handles sustained 65,000 PSI pressure — built for overbore magnum cartridges.
- TriggerTech trigger is adjustable from 2.5 to 5 lbs with zero creep out of the box.
- 26-inch fluted barrel provides optimal velocity for the .30-378 case (approx. 3,150 fps with 200gr).
- Accubrake ST reduces felt recoil by an estimated 30-35% compared to no brake.
Trade-offs
- Heavy recoil energy (~40 ft-lbs) — requires proper technique and may induce flinch.
- Ammunition is expensive and scarce; factory loads often exceed $7 per round.
- 48.75-inch overall length is cumbersome in vehicles or tight blinds.
- High-gloss blued finish and walnut stock show scratches and handling marks easily in field use.
Key attributes
| upc | 747115440955 |
| manufacturer | Weatherby |
| manufacturer part number | MDX01N303WR8B |
| action | Bolt Action |
| atf type | RIFLE |
| barrel length | 26" |
| caliber/gauge | .30-378 Weatherby Magnum |
| capacity | 3 + 1 |
| package height | 3.7 |
| package width | 12.4 |
| product type | Rifle |
| shipping weight | 13.1 |
| sights | No Sights |
Frequently asked questions
- Is the barrel threaded for a suppressor?
- Yes, the 26-inch barrel has a standard 5/8"-24 thread pattern under the factory Accubrake ST. This is the common thread for .30-caliber suppressors from companies like SilencerCo and Dead Air. You must follow ATF Form 4 procedures and have an approved tax stamp before mounting any suppressor.
- What scope bases fit the drilled receiver?
- The receiver uses a standard Remington 700 long-action base pattern. Companies like Nightforce, Leupold, and EGW make direct-fit bases. You will need #8-40 screws that are 0.375 inches long for proper torque; longer screws can bottom out and damage the receiver threads.
- How long does shipping take to an FFL?
- Ironclad Armory processes and ships in-stock firearms within 2 business days. Transit time depends on your FFL's location, but ground shipping typically takes 4-7 business days continental US. Your selected FFL must provide their license to us before we can ship.
- Can I return it if I don't like the recoil?
- No. Firearms are non-returnable for buyer's remorse due to federal regulations. We can only accept returns for a manufacturing defect, which must be reported within 30 days of transfer. Always research cartridge ballistics and try a similar magnum at a range before purchasing.
- Does this work with aftermarket triggers?
- The factory TriggerTech unit is user-adjustable from 2.5 to 5 lbs and is an excellent component. While the Mark V action can accept some aftermarket triggers, it is not a drop-in fit for common Remington 700 models. Stick with the factory trigger; it's one of the rifle's best features.