The Weatherby Mark V Accumark in .300 Winchester Magnum with a 26-inch barrel is a precision bolt-action rifle built for shooters who demand sub-MOA accuracy at extended ranges. This model combines the legendary Mark V action with a #3 contour fluted barrel, Accubrake ST muzzle brake, and a TriggerTech trigger, all finished in Graphite Black Cerakote. The synthetic Monte Carlo stock and threaded barrel make it a versatile platform for competition and hunting. This is a factory-built long-range tool, not a custom build, and it delivers consistent performance for precision shooters.
| Manufacturer | Weatherby |
|---|---|
| Model | Mark V Accumark |
| Caliber | .300 Winchester Magnum |
| Barrel Length | 26 inches (threaded, fluted, #3 contour) |
| Action | Bolt Action (Mark V) |
| Trigger | TriggerTech (adjustable, per manufacturer specs) |
| Muzzle Brake | Accubrake ST (included) |
| Stock | Synthetic, Black fiberglass, Monte Carlo |
| Finish | Graphite Black Cerakote (receiver, barrel) |
| Weight | Approx. 8.5 lbs (unloaded, per Weatherby specs) |
| Condition | New |
Key Features
- #3 Contour Fluted Barrel: This barrel profile balances weight and stiffness, reducing recoil-induced muzzle rise while maintaining rigidity for consistent shot-to-shot accuracy. The fluting sheds heat faster during strings of fire.
- Accubrake ST Muzzle Brake: Cuts felt recoil by up to 53% per Weatherby’s testing, letting you spot impacts through the scope without losing target acquisition. Threaded for suppressor use if you prefer.
- TriggerTech Trigger: Zero-creep, adjustable trigger with a crisp break. Per TriggerTech specs, it offers a 2.5-5 lb pull range, giving you a clean release without overtravel—critical for precision shots.
- Graphite Black Cerakote Finish: Corrosion-resistant and low-glare, this finish protects the receiver and barrel from weather and handling abuse. It’s baked on, not painted, so it holds up to cleaning solvents and field use.
- Mark V Action: Nine locking lugs provide a 54-degree bolt lift for faster cycling. The forged steel receiver is glass-bedded from the factory for consistent bedding pressure.
Who It’s For
This rifle is for the shooter who wants a factory-built long-range platform without going full custom. If you compete in PRS, NRL Hunter, or shoot steel past 800 yards, the .300 Win Mag gives you the velocity to reach out with heavy bullets. It’s also a solid choice for elk or bear hunters who value precision over light weight. The 26-inch barrel and brake make it less portable, but the accuracy payoff is worth it for stationary or tripod-based shooting.
Pros and Cons
- Pros: Sub-MOA guarantee from Weatherby; TriggerTech trigger is a major upgrade over standard factory triggers; Accubrake ST is effective for recoil management; fluted barrel aids heat dissipation during extended strings.
- Cons: The synthetic stock feels less rigid than high-end chassis systems; the 26-inch barrel with brake makes it muzzle-heavy for off-hand shooting; MSRP is high compared to similar factory rifles like the Bergara B-14 HMR.
Comparison: Weatherby Mark V Accumark vs. Competitors
| Feature | Weatherby Mark V Accumark .300 Win Mag | Bergara B-14 HMR .300 Win Mag | Christensen Arms MPR .300 Win Mag |
|---|---|---|---|
| Barrel | 26-inch fluted #3 contour, threaded | 22-inch, heavy contour, threaded | 24-inch, carbon fiber wrapped, threaded |
| Action | Mark V (9-lug, forged steel) | Bergara 700-style (2-lug, 4140 steel) | Christensen Arms (2-lug, 416 stainless) |
| Trigger | TriggerTech (adjustable, 2.5-5 lb) | Bergara Performance (adjustable, 2.5-4 lb) | TriggerTech (adjustable, 2.5-5 lb) |
| Stock | Synthetic fiberglass Monte Carlo | Hogue overmolded with aluminum bedding | Carbon fiber with adjustable cheek rest |
| Weight | ~8.5 lbs | ~9.2 lbs | ~7.8 lbs |
| Price (MSRP) | $1,999 | $1,149 | $2,495 |
| Accuracy Guarantee | Sub-MOA (3-shot group) | Sub-MOA (3-shot group) | Sub-MOA (3-shot group) |
FAQ
Does the Weatherby Mark V Accumark come with a scope rail or rings?
No, the rifle ships with a Picatinny rail pre-installed on the receiver (20 MOA taper per Weatherby specs), but rings or a scope are not included. You’ll need to add your own rings—recommend 30mm or 34mm for long-range scopes.
Can I use this rifle for PRS competition?
Yes, but with caveats. The .300 Win Mag offers good ballistics for PRS, but the 26-inch barrel and brake make it longer than some competitors’ rifles. The TriggerTech trigger and sub-MOA accuracy are competitive, but the stock lacks an ARCA rail or adjustable cheek piece out of the box. You may need a chassis upgrade for serious competition use.
What is the twist rate on the 26-inch barrel?
Per Weatherby specs, the twist rate is 1:10 inches. This stabilizes bullets from 168 to 220 grains, which covers most .300 Win Mag loads for long-range shooting.
Is the Accubrake ST removable?
Yes, the Accubrake ST is threaded onto the barrel and can be removed with a wrench. The barrel is also threaded 5/8×24 for suppressor attachment. Removing the brake will increase recoil but reduce overall length.
What is the magazine capacity?
The rifle uses a detachable box magazine with a 3-round capacity (factory standard). Extended magazines are available from third-party manufacturers if you need more capacity for competition.
Ready to Order
- ✅ Nationwide delivery (all 50 states)
- ✅ Ships 1-2 business days
- ✅ 30-day returns
- ✅ Secure checkout
Last updated: April 2026
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