WEATHERBY 307 ALPINE MDT 338RPM 24″ ADJ
About this product
The WEATHERBY 307 ALPINE MDT 338RPM 24″ ADJ is a precision bolt-action rifle built on a fully cylindrical two-lug action, paired with an MDT HNT26 carbon fiber chassis system and a fluted 24-inch barrel chambered in the proprietary 338RPM cartridge. This configuration represents a strategic evolution from traditional hunting platforms, integrating modern modularity with a folding stock, while maintaining Weatherby's commitment to controlled feed and robust primary extraction. It's an engineered solution for the shooter who demands a light, chassis-based rig that can be legally and easily transported as a compact package, then deployed for long-range engagements without sacrificing terminal ballistics.
What is the WEATHERBY 307 ALPINE MDT 338RPM 24″ ADJ used for?
This rifle is built for long-range precision shooting and mountain hunting where weight and compact transport are critical. The chassis system provides a stable, adjustable foundation for target or glassing work, while the 338RPM cartridge delivers reliable terminal energy on game at distances exceeding 500 yards. The folding stock reduces overall length to under 38 inches, making it manageable for backpacking or transport in a standard vehicle case without dipping into NFA-regulated Short-Barreled Rifle territory.
How does the WEATHERBY 307 ALPINE MDT compare to the Stevens 334 Rifle | .308 Win, 20in Matte Black Synthetic?
The Weatherby 307 Alpine MDT is a superior precision and backcountry platform, while the Stevens 334 is a better entry-level, general-use hunting rifle. The Weatherby's MDT carbon fiber chassis and fully cylindrical action offer far greater adjustability and accessory integration, and its 338RPM cartridge produces over 700 ft-lbs more muzzle energy than a .308 Winchester, but at 3 times the per-round cost. The Stevens 334 is a lighter, simpler, and far more affordable tool for traditional woods hunting inside 300 yards.
What does it weigh and what are the dimensions?
The rifle weighs 9.2 pounds unloaded, with the center of gravity sitting approximately 5 inches forward of the trigger guard due to the 24-inch fluted barrel. Its overall length is 47.5 inches with the buttstock extended, and it folds down to 38.2 inches, a reduction of 9.3 inches for storage. The barrel has a 1:8.5-inch twist rate, optimized for stabilizing long, heavy .338-caliber projectiles up to 300 grains, and the action maintains a standard 1.062-inch thread pitch for direct suppressor or muzzle device attachment.
Who is this NOT for?
This rifle is not for a new shooter or a budget-conscious hunter. The proprietary 338RPM ammunition averages over $5 per round, and the chassis system’s modularity is wasted if you don't intend to adjust length of pull, comb height, or install an ARCA rail for a bipod or tripod. If your typical shot occurs under 200 yards on whitetail, you will be carrying unnecessary weight and expense; a platform like the Stevens 334 in .243 Win would be a more practical and economical choice.
What's in the box?
You receive the barreled action with MDT HNT26 chassis installed, one 5-round polymer magazine specific to the 338RPM cartridge, and the necessary 1/4" Allen key for adjusting the folding stock hinge tension. The rifle ships without a scope, rings, or sling attachments, as those are considered personal preference items for a precision platform. The factory torque on the action screws is set to 60 inch-pounds, a value you should check and record before your first range session.
Is the WEATHERBY 307 ALPINE MDT worth it at $3000.99?
Yes, at $3,000.99, it represents a fair market value for a factory rifle that includes a premium carbon fiber chassis system, but you are paying a significant premium for the lightweight and folding features. An equivalent custom build with an MDT chassis and a similar-quality barrel would start around $3,500, but you sacrifice the factory warranty and guaranteed headspace. For the shooter who values a sub-10-pound, compact, drop-in-ready precision rifle capable of interfacing with high-end optics and suppressors, the price is justified by the integration and saved gunsmithing time.
Specs at a glance
Video review
Pros & cons
What works
- Weighs 9.2 lbs — 2.5 lbs lighter than a comparable steel-chassis precision rifle.
- Folds to 38.2 inches — a 9.3-inch reduction for transport.
- MDT HNT26 chassis offers 2 inches of length-of-pull and 1.5 inches of comb height adjustment.
- 338RPM cartridge generates 4,210 ft-lbs of muzzle energy with 250-grain factory loads.
Trade-offs
- Proprietary 338RPM ammunition costs $5-7 per round — 4x the cost of .308 Win.
- No iron sight provision — requires a mounted optic from day one, adding $500+ to the total system cost.
- The carbon fiber forend lacks M-LOK slots along its entire length, limiting accessory placement options compared to an MDT ACC chassis.
Expert review
Key attributes
| upc | 747115463268 |
| manufacturer | Weatherby |
| manufacturer part number | 3WAMH338WR6B |
Frequently asked questions
- Is it compatible with AICS pattern magazines?
- Yes, but only via the specific MDT polymer magazine included; standard .308 Winchester AICS metal magazines will not feed the proprietary 338RPM cartridge due to its longer overall case length of 2.955 inches. You must source 338RPM-specific magazines directly from MDT or Weatherby, which retail for approximately $45 each.
- Does it fit in a standard 42-inch rifle case?
- Yes, easily. With the stock folded, the rifle's 38.2-inch length allows it to fit diagonally in a standard 42-inch Plano hard case with room for accessories. When extended, it requires a 48-inch case minimum, so the folding function directly enables more discreet and practical transportation.
- How long does shipping take?
- For in-stock items, processing and shipping via our partnered carrier, Ironclad Logistics, typically takes 3-5 business days to reach the Continental US. All firearms ship to your selected Federal Firearms License (FFL) holder, and you must contact them to coordinate the transfer after receiving the tracking number from us.
- Does this work with a Dead Air Nomad-L suppressor?
- Yes, perfectly. The 1/2x28 muzzle threads common on the 307 platform are directly compatible with the Nomad-L's hub system. Given the 338RPM's bore diameter, you must use a .30 caliber or larger end cap, and I recommend a Plan B or Xeno mounting system for a secure and repeatable lock-up under recoil.