Description
The Accumark has been the workhorse of the Weatherby lineup for decades, and this .300 Winchester Magnum version shows why the name still carries weight. It starts with the Mark V action, the nine lug design with a short 54 degree bolt lift that Weatherby has long called the strongest bolt action made. From there you get a 26 inch, #3 contour stainless barrel that's fluted to shed weight and heat, free floated for consistency, and threaded 5/8×24 with an Accubrake ST installed to take the sting out of magnum recoil.
Built Around Real Accuracy
Weatherby backs every Accumark with a Sub-MOA guarantee, meaning it will print a three shot group under an inch at 100 yards with quality factory ammo. The hand-laid Monte Carlo fiberglass stock does a lot of the work here, with full length aluminum bedding to keep the action locked in place shot after shot. Add the crisp, clean-breaking TriggerTech trigger and you've got a rifle that makes shooting well feel easy. Owners consistently report half to three quarter inch groups once they find a load their barrel likes.
A .300 Win Mag That Earns Its Keep
The .300 Win Mag chambering is a smart pick in this platform. Factory ammo is everywhere, component brass is easy to find for handloaders, and the cartridge has more than enough reach and punch for elk, moose, and mule deer across big country. The 26 inch tube wrings out the velocity the cartridge was designed for, and the 3+1 internal box magazine keeps the rifle's lines clean and snag free.
Finishing Touches on the Mark V Accumark
The metalwork wears Graphite Black Cerakote over the receiver, bolt, and safety, contrasting nicely against the spun stainless barrel flutes, while the black gel coat stock with spiderweb accents shrugs off weather that would ruin a wood stock. The receiver comes drilled and tapped with no sights, so plan on a quality scope and rings. Built in Sheridan, Wyoming, this is a rifle you buy once and hunt with for the rest of your life.
Key Specifications
- Manufacturer: Weatherby
- Model: Mark V Accumark
- MPN: MAM01N300NR8B
- UPC: 747115440191
- Caliber: .300 Winchester Magnum
- Action: Bolt Action, Mark V 9-Lug with 54 Degree Bolt Lift
- Barrel Length: 26" #3 Contour, Fluted Stainless, Free Floated
- Muzzle: Accubrake ST, 5/8×24 Threaded
- Capacity: 3+1, Internal Box Magazine
- Trigger: TriggerTech
- Stock: Hand-Laid Monte Carlo Fiberglass, Black with Spiderweb Accents
- Receiver Finish: Graphite Black Cerakote
- Overall Length: 48.25"
- Safety: Two-Position
- Sights: None, Drilled and Tapped for Scope Mounts
- Accuracy Guarantee: Sub-MOA (3-shot group under 1" at 100 yards with premium factory ammo)
What’s Included
- Weatherby Mark V Accumark rifle with Accubrake ST muzzle brake installed
- Owner's manual
Frequently Asked Questions
Does the Weatherby Mark V Accumark come with a scope or sights?
No, this rifle ships without sights. The receiver is drilled and tapped, so you can mount the bases, rings, and scope of your choice. Given the long range potential of a .300 Win Mag with a 26 inch barrel, it deserves a quality optic to match.
How accurate is the Mark V Accumark really?
Weatherby guarantees a three shot group of .99 inches or better at 100 yards with premium factory ammunition. In the field, plenty of Accumark owners report groups in the half to three quarter inch range once they settle on a load their rifle favors. The free floated barrel, aluminum bedding, and TriggerTech trigger all contribute to that consistency.
Can I remove the Accubrake ST muzzle brake?
Yes. The barrel is threaded 5/8×24, a common thread pitch, so the brake unscrews if you'd rather run a thread protector or a different muzzle device. Keep in mind the brake does a lot to tame .300 Win Mag recoil, so many owners leave it right where it is.
How does the magazine work on this rifle?
The Accumark uses an internal box magazine holding 3 rounds, plus 1 in the chamber for a total of 4. There's no detachable magazine to lose or rattle around, which keeps the rifle's profile slim for carrying through timber or riding in a scabbard.





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