338 WBY RPM and Left-Handed Mark V — Innovation in Excellence

Innovation is always welcome in the gun world, and Weatherby’s 338 WBY RPM and left-handed Mark V are fantastic examples of dedication to excellence. The 338 WBY RPM was created based on the popular 6.5 WBY RPM for the smaller Mark V 6 lug action and the left-handed Mark V is a testament to dependable performance.

338 WBY RPM
According to Weatherby, the 338 WBY RPM shoots flatter, hits harder, and is more accurate than anything on the market. (Photo credit: Weatherby)

Weatherby’s Adam Weatherby had a few things to say about the 338 WBY RPM and the left-handed Mark V:

Upon the launch of the 6.5 WBY RPM in 2019, we began to dream of what could be next in the RPM family. Having successfully launched a 5 lb rifle in a 6.5 caliber magnum cartridge, I began to imagine what it would be like if we had a big bore option that could fit in the same Weatherby Mark V 6 lug action. Field testing for the 338 WBY RPM began back in 2020 when my son was able to take the first animal with Weatherby’s 16th cartridge introduction on a spring bear hunt. That following fall, Brenda and I both shot elk and moose ranging from 90 yards out to 550 yards and the cartridge performed tremendously. I am truly honored to be able to carry on my grandfather’s legacy of cartridge development and rifle building. The pairing of this new cartridge with our latest rifles reminds me of one of his old slogans that said “Tomorrow’s Rifles Today.” I only wish he could be here to see the innovation and development that our amazing Sheridan-based team is able to accomplish.

 left-handed Weatherby Mark V
The left-handed Weatherby Mark V is designed for durability and performance even in rugged conditions. (Photo credit: Weatherby)

According to the gun maker, the Mark V has a lot to offer:

Weatherby Mark V Backcountry Left Hand McMillan Tan Bolt Action Rifle – 257 Weatherby Magnum – 26in – This rifle provides the craftsmanship and quality expected from a Mark V rifle only surpassed by the stunning color combination and true rugged dependability that embodies its name, Backcountry. Developed in conjunction with the Backcountry Ti, this model carries many of the same innovative technologies including a carbon fiber stock, 3D HEX recoil reducer, TriggerTech Trigger, and Accubrake ST.

Check out this video on the 338 WBY RPM:

 

The Weatherby left-handed Mark V is offered in the following calibers:

  • 240 WBY MAG
  • 243 WIN
  • 6.5 CM
  • 6.5 WBY RPM
  • 280 AI
  • 30-06 SPR
  • 308 WIN
  • 338 WBY RPM

Features of the left-handed Weatherby Mark V include:

Guaranteed Sub-MOA Accuracy

 All Mark V rifles are guaranteed to shoot a 3-shot group of .99” or less at 100 yards (SUB-MOA) from a cold barrel when used with Weatherby factory or premium ammunition within Two-Years of Verified Purchase Date to Original Purchaser.

Triggertech Trigger

TriggerTech’s trigger provides true zero-creep break, extremely short over-travel, and is externally adjustable. Precision-cut stainless steel components ensure consistent trigger pulls from shot to shot in a safe, reliable, and corrosion-resistant package.

Accubrake ST 

By adding an Accubrake ST you will significantly reduce felt recoil up to 53%. Available in four different barrel diameters, with thread protector, for a perfect brake-to-barrel contour. Included with All Calibers.

54 Degree Bolt

The shortest in the industry (as compared to the typical 90 bolt throw). Allows for faster chambering on follow-up shots and greater bolt-to-scope clearance.

Cerakote

Cerakote is the industry-leading thin-film ceramic coating. The Cerakote unique formula enhances physical properties including wear, corrosion, and chemical resistance while improving impact strengths, and hardness.

A closer look at the bolt handle on the Weatherby Mark V.
A closer look at the bolt handle on the Weatherby Mark V. (Photo credit: Weatherby)

Specifications for the left-handed Mark V in 257:

Caliber 257 Weatherby Magnum
Capacity 3+1
Barrel Length 26in
LOP 13.5in
Finish McMillan Tan Cerakote
Stock Carbon Fiber With Green & Tan Sponge Patterns
Sights None, Drilled & Tapped
Weight 6.3lbs
Action Bolt Action
Cartridge 257 Weatherby Magnum
Color Carbon Fiber With Green & Tan Sponge Patterns
Hand Left
Overall Length 48.13in
Stock Material Carbon Fiber
Twist 1:10in
Type Centerfire

MSRP for the left-handed Weatherby Mark V varies by custom design.

Kat Ainsworth Stevens is a long-time outdoor writer, official OGC (Original Gun Cognoscenti), and author of Handgun Hunting: a Comprehensive Guide to Choosing and Using the Right Firearms for Big and Small Game. Der Teufel Katze has written for a number of industry publications (print and online) and edited some of the others, so chances are you've seen or read her work before, somewhere. A woman of eclectic background and habits, Kat has been carrying concealed for over two decades, used to be a farrier, and worked for a long time in emergency veterinary medicine. She prefers big bores, enjoys K9 Search & Rescue, and has a Master's Degree in Pitiless Snarkastic Delivery.

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