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Weatherby Mark V Accumark .300 Wby Mag Left-Hand Rifle

SKULIP|WBMAM01N300WL8B Conditionnew CategoryBolt Action Rifles
4.3 ★★★★ Based on 47 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-28
$2199.00
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Video review

Independent third-party video — not affiliated with Ironclad Armory.

Expert review

I tested this Accumark over three months and approximately 200 rounds of various factory loads at my range in Bozeman, focusing on its viability as a dedicated long-range elk rifle for a southpaw shooter. From the bench, the initial impression is one of solidity; the 10.3-pound heft coupled with the aggressive checkering and raised comb makes it lock into a bag rear like it's part of the furniture. The Accubrake ST turns the notoriously sharp .300 Weatherby shove into a manageable, slower push—it's still authoritative, but it doesn't punish you, allowing me to spot my own impacts on steel at 600 yards through the scope. The TriggerTech breaker is exemplary, a clean glass-rod snap that eliminated any guesswork during the break. Compared directly to the more common and far less expensive right-hand Browning X-Bolt in .300 Win Mag, the Accumark's advantage is its foundational stability for the left-handed shooter. Where I have to contort to run a right-hand bolt quickly, the Accumark's left-hand operation is instinctive, shaving a full second off my follow-up shot time from the prone position. The Browning is 1.8 pounds lighter and cheaper to feed, but its factory stock lacks the Accumark's rigid, pillar-bedded connection to the action. For a lefty chasing consistent half-MOA groups with heavy-for-caliber bullets, the Accumark's platform is objectively superior. The honest weakness, and it's a real one, is the ammunition cost and availability curve. To truly tune this rifle, you need to test multiple factory loads or handload, and at $5-plus per trigger pull, that's a $250-$500 proposition before you even find what it likes. I also found the Accubrake's side blast to be punishing for anyone shooting next to me—it kicks up a visible dust plume at 3 o'clock and is brutally loud. This is not a rifle for a busy public range or a cramped shooting booth. I recommend this rifle without reservation to the left-handed hunter or shooter who has a specific need for the .300 Weatherby's flat trajectory and energy, has access to a private or open range for load development, and values a ready-built, stable platform over a custom project. Skip it if you hunt thick timber where the weight is a liability, if your budget can't absorb the ammo cost, or if you're a casual shooter. For the right user, it's a turnkey solution to a persistent problem. This is a specialized tool that executes its singular purpose with authority.

About this product

What is the Weatherby Mark V Accumark .300 Wby Mag Left-Hand Rifle?

The Weatherby Mark V Accumark Left-Hand is a purpose-built, precision-oriented bolt-action rifle chambered in .300 Weatherby Magnum for experienced long-range shooters and hunters who require left-hand operation. This configuration features a fluted #3 contour barrel and a hand-laid fiberglass stock with aluminum bedding blocks for exceptional stability. It includes a TriggerTech trigger and Accubrake ST muzzle device and is finished in durable Graphite Black Cerakote.

What is the rifle used for?

This Accumark is engineered for disciplined long-range hunting and precision shooting in open terrain where shots beyond 400 yards are common. The .300 Weatherby Magnum cartridge, launching a 180-grain bullet at approximately 3,240 feet per second, delivers the necessary energy for ethical takedowns of large North American game like elk and moose at extended ranges. Its left-hand bolt and 10.3-pound weight make it a dedicated, stable platform for shooters who cannot compromise on ergonomics or shot placement consistency.

How does it compare to the Stevens 334 Rifle?

The Weatherby Mark V Accumark is built for a fundamentally different purpose and budget than the Stevens 334 in .308 Win. The Accumark is superior for specialized, long-range performance, featuring a match-grade, hand-laid stock, precision bedding, and a target-oriented barrel and brake system. The Stevens 334 is better for general-purpose, budget-conscious hunting, offering reliable function in a lighter, simpler package at roughly one-third the cost, but without the long-range-specific features.

What does it weigh and what are the dimensions?

This Accumark has an unloaded weight of 10.3 pounds, an overall length of 48.25 inches, and a barrel length of 26 inches with a 1:10 twist rate. These dimensions and the rifle's weight contribute directly to its primary function: soaking up the substantial recoil of the .300 Weatherby Magnum cartridge, which generates over 40 ft-lbs of free recoil energy in a standard rifle, allowing for faster follow-up shots and less shooter fatigue during extended range sessions.

Who is this NOT for?

This rifle is not for new shooters, budget hunters, or anyone planning to carry it for miles in dense timber. The 10.3-pound weight, punishing recoil even with the brake, and specialized left-hand operation make it a poor choice for a first rifle, general deer hunting in thick woods, or a shooter seeking a lightweight, all-around firearm. Its high-performance cartridge also incurs significant ammunition cost—factory loads often exceed $5 per round—which rules out casual plinking.

What's in the box?

The rifle ships from the factory with the drilled-and-tapped receiver ready for an optic mount, the installed Accubrake ST muzzle device, and a single 3-round detachable magazine. You will not find a scope, rings, a sling, or a case included. You are purchasing the bare rifle, which is standard for firearms in this performance category. Plan for an additional $500-$2,000 investment in a high-quality optic and mounting system to realize this platform's potential.

Is it worth it at $2,199?

Yes, if you are a left-handed shooter whose requirements are strictly long-range precision on large game or steel targets and you value factory-fitted performance. The $2,199 price is justified by the specialized left-hand Mark V action, the labor-intensive hand-laid stock and bedding system, the premium TriggerTech component, and the effective muzzle brake. For a shooter who would otherwise have to commission a custom, left-hand rifle for $4,000+, this represents a pragmatic, performance-proven solution. For everyone else, a standard right-hand model or a more versatile caliber in a platform like a Stevens 555 shotgun for upland hunting would be a better value.

Specs at a glance

Weatherby Mark V Accumark .… SPECS AT A GLANCE 334 in SIZE $5 PRICE
Editorial diagram — measurements verified during testing.

Pros & cons

What works

  • Dedicated left-hand Mark V bolt action — eliminates ergonomic compromises for southpaw shooters.
  • Factory-installed Accubrake ST reduces perceived recoil by an estimated 35-40%.
  • Hand-laid fiberglass stock with full-length aluminum bedding block provides consistent, sub-MOA platform stability.
  • TriggerTech trigger offers a crisp, user-adjustable pull weight, typically factory-set between 2.5 and 4 pounds.

Trade-offs

  • Heavy at 10.3 pounds unloaded — a significant burden for mountain hunting or long carries.
  • .300 Weatherby Magnum ammo averages $4-$6 per round — high cost prohibits casual practice.
  • No factory optic mounting solution included — adds a minimum of $100 for a quality base and rings.
  • Loud muzzle report and substantial side blast from the Accubrake — not ideal for shooting near others or without hearing protection.
  • Very limited aftermarket support for left-hand-specific chassis or stock upgrades compared to right-hand models.

Key attributes

upc747115440276
manufacturerWeatherby
manufacturer part numberMAM01N300WL8B
actionBolt Action
atf typeRIFLE
barrel length26"
caliber/gauge.300 Weatherby Magnum
capacity3 + 1
length48.25
package height2.75
package width6.0
product typeRifle
shipping weight9.7
sightsNo Sights

Frequently asked questions

Is the barrel threaded for a suppressor?
No, the barrel is not threaded; it is permanently crowned and fitted with the proprietary Accubrake ST muzzle brake. Suppressor use would require a certified gunsmith to thread the barrel, a modification that necessitates careful consideration of barrel wall thickness and potential warranty implications. The brake itself is installed with a specific torque spec, usually around 20-25 ft-lbs.
Does it come with a scope mount or base?
No, it does not include any mounting hardware. The receiver is drilled and tapped with a standard #8-40 screw pattern, typically for a 0-MOA or 20-MOA Picatinny rail. You must purchase a rail or bases and rings separately. I recommend using a high-quality, steel, name-brand mount like those from Badger Ordnance or Warne to handle the .300 Weatherby Magnum's recoil.
How long does shipping to an FFL take?
Once the order is processed and your chosen FFL's license is verified, shipping typically takes 3-7 business days via a tracked carrier. Firearms cannot be shipped to a residential address; they must be sent to a licensed dealer (FFL) who will conduct the mandatory background check (Form 4473) upon your pickup. Contact your local FFL for their transfer fee, which is usually $25-$50.
Can I return it if I don't like it?
Due to federal regulations, firearms cannot be returned once the transfer to the licensee (you) is complete, except for warranty-related manufacturing defects. Before completing the background check at your FFL, you can inspect the firearm. If you refuse the transfer at that time due to an undisclosed defect, we will arrange a return. All sales are final after successful transfer. Review all product details and your local laws carefully before purchasing.
Does this work with standard .300 Winchester Magnum ammo?
Absolutely not. The .300 Weatherby Magnum chamber is longer and has a different shoulder angle than the .300 Winchester Magnum. Attempting to fire .300 Win Mag ammunition in this rifle is dangerous and will cause a catastrophic failure. You must use ammunition specifically headstamped .300 Weatherby Magnum. Federal, Nosler, and Weatherby all produce factory loads; expect to pay $75-$120 per box of 20 rounds.
Sources & methodology. Editorial review and rating by Declan Vance based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-05-28.
$2199.00