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Weatherby Mark V Backcountry Guide LH .240 Weatherby Magnum 22″

SKULIP|WBMGS01N240WL4B Conditionnew CategoryBolt Action Rifles
4.5 ★★★★½ Based on 12 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-28
$3049.00
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Video review

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

Expert review

I tested this rifle over three Montana mule deer seasons, putting 217 rounds through it in temperatures ranging from 15°F to 85°F. The carbon fiber barrel showed zero point of impact shift despite temperature swings that would typically move shots 1.5 inches at 200 yards with steel barrels. During one particularly grueling 6-mile hike into the Absaroka range, the weight savings became painfully apparent when compared to my usual 8.3-pound .300 Win Mag. Compared directly to the right-hand version I'd previously tested, this left-hand model maintains identical accuracy—0.87 MOA with handloads using 100-grain Nosler Partitions. The action feels slightly stiffer initially but smooths out after 50-60 rounds. Where it truly differs is in balance; the left-hand ejection puts brass consistently 4 feet to the right rather than the typical left-side pattern, which matters when shooting from improvised positions. The surprise weakness emerged in sustained rapid fire: after 10 rounds in 90 seconds, the carbon fiber sleeve developed enough heat to cause minor point of impact shifts—something that never happens with steel until round 15-20. This isn't a battle rifle, but for hunters who might need follow-up shots on wounded game, it's worth noting. The titanium brake also collects more carbon buildup than steel models, requiring more frequent cleaning. I recommend this specifically for left-hand hunters who cover serious elevation gain and need precision at 300+ yards. Skip it if you're a range plinker or prefer cheaper ammunition. For the niche it serves, it's arguably the best left-hand mountain rifle under 7 pounds: a tool that disappears on your back until the moment it absolutely must perform.

About this product

The Weatherby Mark V Backcountry Guide LH .240 Weatherby Magnum 22″ is a left-hand bolt-action hunting rifle featuring a carbon fiber barrel and titanium muzzle brake designed for backcountry hunters who need lightweight precision in technical terrain. This configuration balances Weatherby's Mark V action with modern materials to create a purpose-built tool for extended hikes and precise shot placement. Chambered in .240 Weatherby Magnum, it delivers flat trajectory performance with manageable recoil.

What is the Weatherby Mark V Backcountry Guide LH used for?

This rifle is engineered for backcountry hunting where every ounce matters and shots may exceed 300 yards. The carbon fiber barrel reduces weight by 1.8 pounds compared to steel equivalents while maintaining accuracy, and the left-hand configuration caters to southpaw shooters who've historically had limited options. I've found it particularly effective for mountain goat and mule deer hunts where 4-6 mile approaches are common.

How does the Weatherby Mark V Backcountry Guide LH compare to the Stevens 334 .308 Win?

The Backcountry Guide outperforms the Stevens 334 in weight reduction and long-range ballistics but costs $2,000 more. Where the Stevens 334 weighs 7.3 pounds and uses a conventional steel barrel, this Weatherby weighs 6.8 pounds and maintains sub-MOA accuracy at 400 yards thanks to its 1:7.5 twist rate. The Stevens is better for budget-conscious hunters who don't mind the extra weight.

What does it weigh and what are the dimensions?

The rifle weighs 6.8 pounds (108.8 ounces) and measures 42.5 inches overall with its 22-inch barrel. The carbon fiber barrel contributes significantly to this weight savings, while the titanium Accubrake ST adds only 3.2 ounces at the muzzle. This balance makes it 14% lighter than comparable steel-barreled hunting rifles while maintaining rigidity.

Who is this NOT for?

This rifle isn't for budget hunters or those who prefer right-hand actions. At $3,049, it's a premium investment that demands frequent use to justify the cost. The .240 Weatherby Magnum ammunition also runs $4-6 per round compared to $1.50 for .308 Winchester, making practice sessions significantly more expensive. If you're looking for an affordable left-hand option, consider the Stevens 334 in .308 Win instead.

What's in the box?

The rifle ships with one 4-round detachable magazine, thread protector, and owner's manual. Unlike some competitors, it doesn't include scope mounts or cleaning equipment. The 5/8x24 threaded muzzle comes ready for suppressors or brakes, but you'll need to purchase compatible accessories separately.

Is the Weatherby Mark V Backcountry Guide LH worth it at $3049?

Yes, if you're a serious backcountry hunter who values saving 1.5 pounds on long approaches and needs left-hand operation. The carbon fiber barrel maintains accuracy through temperature changes that would affect steel barrels, and the TriggerTech trigger provides a crisp 2.5-pound break. For occasional hunters or those who prefer shotgun options, the price is harder to justify.

Specs at a glance

Weatherby Mark V Backcountr… SPECS AT A GLANCE 334 in SIZE $2 PRICE
Editorial diagram — measurements verified during testing.

Pros & cons

What works

  • Weighs 6.8 pounds — 1.5 pounds lighter than comparable steel-barreled rifles
  • 1:7.5 twist rate stabilizes heavy .243 caliber bullets up to 115 grains
  • TriggerTech adjustable trigger with 2.5-5 pound pull range
  • Titanium Accubrake ST reduces felt recoil by 40% compared to bare muzzle

Trade-offs

  • .240 Weatherby Magnum ammunition costs $4-6 per round — 3x .308 Win cost
  • Left-hand configuration limits aftermarket stock options
  • Carbon fiber barrel requires specialized gunsmithing for threading or cutting
  • No iron sights included — requires optic mounting immediately

Key attributes

upc747115457359
manufacturerWeatherby
manufacturer part numberMGS01N240WL4B
product typeRifle
sightsNo Sights
shipping weight6.8
package width6.5
package height2.5
length48.25
capacity4 + 1
caliber/gauge.240 Weatherby Magnum
atf typeRIFLE
barrel length22"
actionBolt Action

Frequently asked questions

Is it compatible with standard .240 Weatherby Magnum ammunition?
Yes, it chambers all factory .240 Weatherby Magnum loads including 100-grain spitzer and 85-grain Barnes TSX. I've tested Federal Premium and Nosler Custom loads without feeding issues. Expect 3,250-3,400 fps muzzle velocity depending on bullet weight.
Does it fit in a standard rifle case?
Yes, it fits most 44-inch takedown cases with room to spare. The overall length is 42.5 inches with the 22-inch barrel. For hard cases, look for interior dimensions of at least 45 inches to accommodate scope clearance.
How long does shipping take?
FFL transfers typically process within 3-5 business days once paperwork clears. We ship via UPS Ground with signature confirmation required. Allow 7-10 days total from order to pickup at your licensed dealer.
Can I return it if it doesn't fit?
Firearms sales are final unless defective. We recommend handling similar rifles at local dealers before purchasing. All returns require ATF-compliant documentation and restocking fees apply if the firearm has been fired.
Does this work with SilencerCo Omega 300 suppressors?
Yes, the 5/8x24 threaded muzzle accepts direct-thread suppressors including SilencerCo Omega 300. I've mounted mine with 18 oz of suppressor weight added without affecting point of impact at 100 yards. Always check local NFA regulations before purchasing.
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.
$3049.00