Description
Weatherby built the Mark V Backcountry Guide around one idea: cut ounces, not corners. This .243 Win version wears a 22 inch BSF carbon fiber barrel, which starts life as a 416R stainless match blank before getting sleeved in carbon fiber loaded under tension. That tensioned design keeps the barrel stiff as it heats up, and since most of the carbon never touches the steel, air can circulate and cool things down between strings. The result is a barrel that stays consistent without weighing you down on the climb out.
What Sets the Backcountry Guide Apart
The Peak 44 Blacktooth stock is one of the lightest carbon fiber stocks in production, and it uses a carbon bedding block that engages the front recoil lug and pushes recoil energy out to the shell of the stock. Pair that with the 3DHex recoil pad and the machined titanium Accubrake ST on the 5/8-24 threaded muzzle, and this rifle is downright pleasant to shoot, even though .243 was never going to beat you up in the first place. Spartan Precision gunsmith adapters come factory installed in the stock, so you can snap a magnetic bipod on and off in seconds without carrying extra hardware.
A Mark V Action That Earns Its Reputation
The legendary Mark V action gets some nice touches here. The bolt is deeply spiral fluted to shave weight and reduce bearing surface for a smoother cycle, the bolt knob is removable, and the 54 degree throw gives you fast follow-ups with plenty of scope clearance. An externally adjustable TriggerTech trigger breaks clean with zero creep, and the receiver comes drilled and tapped for your optic of choice.
Why the .243 Win Guide Makes Sense
With a 1:7.5 twist, this chambering stabilizes heavy, high BC 6mm bullets that older .243 barrels simply cannot, which opens the door to longer pokes on deer, antelope, and coyotes. Add the 4+1 capacity, Graphite Black Cerakote metalwork, and Weatherby's sub-MOA accuracy guarantee, and you have a genuine mountain rifle that pulls double duty in the varmint fields.
Key Specifications
- Manufacturer: Weatherby
- Model: Mark V Backcountry Guide
- MPN: MGS01N243NR4B
- UPC: 747115457380
- Caliber: .243 Winchester
- Action: Bolt Action, 54 Degree Throw
- Barrel: 22" BSF Carbon Fiber, Threaded 5/8-24
- Twist Rate: 1:7.5
- Muzzle Device: Titanium Accubrake ST
- Capacity: 4 + 1
- Stock: Peak 44 Blacktooth Carbon Fiber
- Trigger: Adjustable TriggerTech
- Finish: Graphite Black Cerakote
- Sights: None, Drilled and Tapped for Optics
- Overall Length: 48.25"
- Shipping Weight: 7.6 lbs
What’s Included
- Weatherby Mark V Backcountry Guide rifle
- Factory-installed titanium Accubrake ST muzzle brake
- Factory-installed Spartan Precision gunsmith adapters
- Owner's manual
Frequently Asked Questions
Is the Mark V Backcountry Guide covered by Weatherby's accuracy guarantee?
Yes. Like every Mark V, this rifle is guaranteed to print a 3-shot group of .99 inches or better at 100 yards from a cold barrel when fed Weatherby factory or premium ammunition. The guarantee applies for two years from the verified purchase date to the original buyer.
Can I run a suppressor on this Backcountry Guide?
Absolutely. The 22 inch barrel is threaded 5/8-24 and comes with the titanium Accubrake ST installed from the factory. Spin the brake off and most 6mm-rated cans thread right on, and the shorter Guide-series barrel keeps the overall package manageable with a suppressor attached.
What twist rate does the .243 Win Backcountry Guide use?
Weatherby updated the .243 Win twist to 1:7.5, which is much faster than the 1:10 found on most .243 rifles. That means it will stabilize heavy, high BC 6mm bullets in the 100 grain and up range, giving you noticeably better long-range performance on deer and predators.
Does the Mark V Backcountry Guide come with a detachable magazine?
No, this rifle feeds from an internal magazine with a 4+1 capacity in .243 Win. It is one less thing to lose in the field, which fits the whole lightweight backcountry philosophy of the Guide series.




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