Description
The Accumark has been Weatherby's workhorse long-range rifle for decades, and this version chambers it in one of the most talked-about new cartridges in years. The 25 WBY RPM is a fast-twist quarter bore designed from the ground up to run heavy, high-BC bullets, pushing a 133 grain Berger around 3,000 fps while still spinning lighter bullets past 3,300. That means flatter trajectories and better wind performance than the classic .25-06 or .257 Roberts, with recoil that stays pleasant enough to shoot all afternoon. If you hunt pronghorn, mule deer, or whitetails where shots stretch out, this cartridge was built for exactly that.
Why the Mark V Accumark Still Earns Its Keep
The rifle itself is classic Accumark. You get a 24 inch fluted #3 contour barrel in spun stainless with Graphite Black Cerakote accents, threaded at the muzzle so you can add a brake or suppressor whenever you like. The hand-laid Monte Carlo fiberglass stock features a raised comb, matte gel coat, and spiderweb accents, with aluminum bedding blocks underneath for a stiff, consistent foundation shot after shot. Because the 25 RPM runs through the trim six-lug Mark V action rather than the big nine-lug magnum receiver, the whole package carries lighter than a comparable .257 Weatherby Magnum rifle.
Accumark 25 RPM Accuracy You Can Count On
Like every Mark V, this one comes backed by Weatherby's Sub-MOA guarantee: a three-shot group of .99 inches or less at 100 yards from a cold barrel with Weatherby factory or premium ammo. The crisp adjustable trigger and the Mark V's famously short 54 degree bolt throw make quick follow-ups easy, and the two-position safety sits right where your thumb expects it. The receiver comes drilled and tapped, so mounting glass is straightforward.
Feeding from a 4+1 capacity with an all-weather Cerakote and fiberglass build, this is the kind of rifle you can drag through a wet elk camp or a dusty antelope flat without babying it. For anyone curious about the new 25 RPM, the Accumark is one of the best homes for it.
Key Specifications
- Manufacturer: Weatherby
- Model: Mark V Accumark
- Manufacturer Part Number: MAM01N25RWR6B
- UPC: 747115463657
- Caliber: 25 WBY RPM
- Action: Bolt Action, Mark V 6-Lug with 54-Degree Bolt Throw
- Barrel Length: 24"
- Barrel: Fluted #3 Contour, Spun Stainless with Graphite Black Cerakote, Threaded Muzzle
- Capacity: 4 + 1
- Stock: Hand-Laid Monte Carlo Fiberglass with Spiderweb Accents and Aluminum Bedding Blocks
- Receiver: Graphite Black Cerakote, Drilled and Tapped
- Safety: Two-Position
- Sights: None, Optics Ready
- Accuracy Guarantee: Sub-MOA (.99" 3-Shot Group at 100 Yards with Weatherby Factory or Premium Ammo)
What’s Included
- Weatherby Mark V Accumark rifle
- Owner's manual
Frequently Asked Questions
What is the 25 WBY RPM cartridge and what is it best suited for?
The 25 WBY RPM is Weatherby's modern fast-twist quarter bore, designed to stabilize heavy, high-BC bullets that older .25 caliber cartridges could not handle. It can push a 133 grain Berger around 3,000 fps or drive lighter bullets past 3,300 fps. That makes it a great fit for deer, antelope, and open-country hunting where flat trajectory and wind performance matter.
Does the Mark V Accumark come with an accuracy guarantee?
Yes. Every Mark V rifle is guaranteed to shoot a three-shot group of .99 inches or less at 100 yards from a cold barrel when using Weatherby factory or premium ammunition. The guarantee applies within two years of verified purchase for the original owner.
Is the barrel on the Accumark 25 RPM threaded for a brake or suppressor?
It is. The 24 inch fluted stainless barrel comes threaded at the muzzle, so you can run a suppressor or add a brake like Weatherby's Accubrake ST, which can cut felt recoil substantially. With the 25 RPM's already mild manners, a braked setup makes for a very soft-shooting rifle.
How does the 25 RPM compare to the .257 Weatherby Magnum?
The .257 Weatherby Magnum edges it out slightly in raw velocity with lighter bullets, but the 25 RPM's fast twist lets it shoot heavier, higher-BC bullets the .257 can't stabilize, so it can shoot flatter and drift less at longer distances. It also runs through the smaller six-lug Mark V action, which keeps the rifle lighter and trimmer than a nine-lug magnum build.



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