Description
Weatherby built the Model 307 to play nice with the aftermarket, and the Alpine MDT Carbon is where that idea gets pushed the furthest. The 307 is a two-lug, fully cylindrical action with a Remington 700 footprint, so triggers, rails, mounts, and bottom metal from that massive parts ecosystem drop right in. Out of the box you get a TriggerTech trigger, a fluted bolt with tool-free disassembly, an M16-style extractor, and a two-position safety. Every one of these rifles leaves Sheridan, Wyoming with a sub-MOA guarantee behind it, meaning a three-shot group under an inch at 100 yards from a cold barrel with quality factory ammo.
Why the Alpine MDT Carbon Earns Its Spot in the Pack
The MDT HNT26 chassis is the star here. Built from carbon fiber and magnesium alloy, it weighs a scant 26 ounces while giving you a folding buttstock, adjustable cheekpiece, adjustable length of pull, and a full-length ARCA rail on the forend for quick tripod work. Fold the stock and the rifle shrinks by over nine inches, which turns a full-size hunting rig into something you can stash inside a backcountry pack instead of lashing it to the outside. The 22-inch BSF barrel starts as 416R stainless match steel, then gets sleeved in carbon fiber under tension rather than wrapped, leaving air gaps that shed heat faster and keep the barrel rigid as strings get longer. Weatherby caps it with their Accubrake DST, a self-timing directional brake you can index without a trip to the gunsmith.
A Quarter Bore with Real Legs: The 25 WBY RPM
The 25 WBY RPM is Weatherby's modern take on the quarter bore, spinning heavy, high-BC bullets through a fast-twist barrel that older .25 caliber cartridges simply cannot stabilize. Factory loads push bullets up to the 133-grain class, giving deer and antelope hunters flat trajectories and honest reach without magnum-level punishment. Feeding from AICS-pattern magazines with 3+1 capacity, this rifle is a legitimate do-it-all setup for the hunter who also likes stretching steel on the weekend.
Key Specifications
- Manufacturer: Weatherby
- Model: Model 307 Alpine MDT Carbon
- Manufacturer Part Number: 3WAMC25RWR4B
- UPC: 747115463237
- Caliber: 25 WBY RPM
- Action: Bolt Action (2-Lug Model 307, Rem 700 footprint)
- Barrel: 22" BSF Carbon Fiber (416R Stainless Core)
- Muzzle Device: Accubrake DST (Threaded Muzzle)
- Capacity: 3 + 1
- Magazine Type: AICS-Pattern Detachable
- Chassis: MDT HNT26 Folding, Carbon Fiber/Magnesium (26 oz)
- Trigger: TriggerTech, Adjustable
- Safety: Two-Position
- Metal Finish: Graphite Black Cerakote
- Accuracy Guarantee: Sub-MOA (3 shots under .99" at 100 yds)
- Made In: Sheridan, Wyoming, USA
What’s Included
- Weatherby Model 307 Alpine MDT Carbon rifle
- One AICS-pattern detachable magazine
- Accubrake DST muzzle brake (factory installed)
- Owner's manual
Frequently Asked Questions
What is the 25 WBY RPM cartridge and what is it good for?
The 25 WBY RPM is Weatherby's newest quarter-bore cartridge, designed around a fast 1:7.5 twist so it can stabilize heavy, high-BC bullets that older .25 caliber rounds can't handle. Factory loads run from 107-grain monometals up to 133-grain Berger Elite Hunters at impressive velocities. It's a natural fit for deer, antelope, and open-country hunting where flat trajectory and wind performance matter.
Is the 307 Alpine MDT Carbon compatible with Remington 700 parts?
Yes, and that's a big part of the Model 307's appeal. The action uses a Rem 700 footprint, so most aftermarket triggers, rails, mounts, and bottom metal built for that platform will work. It's the most open platform Weatherby has ever offered, which makes upgrading or customizing down the road simple.
Does this rifle come with an accuracy guarantee?
It does. Weatherby guarantees every Model 307 rifle will print a three-shot group of .99 inches or less at 100 yards from a cold barrel using Weatherby factory or premium ammunition. The guarantee applies for two years from the verified purchase date to the original purchaser.
How compact is the Alpine MDT Carbon with the stock folded?
Folding the MDT HNT26 buttstock trims over nine inches off the rifle's overall length. That makes it compact enough to carry inside a backcountry pack rather than strapped to the outside, which is a real advantage on long hikes or horseback hunts. The whole chassis weighs just 26 ounces, so the rifle stays light even with the folding hardware.





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