Description
Weatherby built the Model 307 platform to play nice with the modern accessory world, and the Alpine ST is where that action really gets to show off. The 307 is a two lug, fully cylindrical design with a Rem 700 footprint, an M16 style extractor, and a bolt you can take apart for cleaning without tools. The receiver is drilled and tapped for 8-40 screws, so mounting glass is straightforward. This one is chambered in 338 WBY RPM, Weatherby's rebated rim magnum that pushes .338 caliber bullets from a standard long action, giving you real elk and moose authority without stepping up to a heavier rifle.
Why the Alpine ST Carries So Well
The headline feature here is the Peak 44 Bastion stock, a vertical grip carbon fiber design that weighs a scant 24 ounces and wears a 3D-Hex recoil pad to soak up some of that magnum push. Pair that with a spiral fluted Sendero contour barrel and a fluted bolt with a skeletonized knob, and the whole rifle comes in around 6.9 pounds. Dual sling studs up front give you room for a bipod and a sling at the same time, which is a small touch you will appreciate on a long pack in. All the metalwork wears Graphite Black Cerakote, so weather and sweat are not going to eat your finish.
Shooting the 307 Alpine ST in 338 WBY RPM
A sub 7 pound .338 magnum sounds punishing on paper, but the factory installed Accubrake takes a huge bite out of felt recoil, and the 5/8-24 threaded muzzle means you can swap to a suppressor or thread protector if you prefer. The TriggerTech trigger is the other half of the accuracy equation, with a clean zero creep break that adjusts externally down to 2.5 pounds. Feeding from a 4+1 capacity with a 1:10 twist that stabilizes heavy .338 bullets, and built at Weatherby's Sheridan, Wyoming facility, this is a purpose built mountain magnum for hunters who count ounces but refuse to give up knockdown power.
Key Specifications
- Manufacturer Part Number: 3WAST338WR6B
- UPC: 747115463305
- Caliber: 338 WBY RPM
- Action: Bolt Action, Model 307 (2-lug, Rem 700 footprint)
- Barrel Length: 24" spiral fluted (26" with muzzle brake)
- Twist Rate: 1:10
- Muzzle Thread: 5/8-24
- Muzzle Device: Weatherby Accubrake
- Capacity: 4+1
- Stock: Peak 44 Bastion carbon fiber with 3D-Hex recoil pad
- Trigger: TriggerTech, externally adjustable down to 2.5 lbs
- Weight: 6.9 lbs
- Overall Length: 44"
- Length of Pull: 13.25"
- Finish: Graphite Black Cerakote
- Safety: Two-Position
What’s Included
- Weatherby 307 Alpine ST rifle with Accubrake installed
- Owner's manual
Frequently Asked Questions
What is the 338 WBY RPM cartridge and what is it good for?
The 338 WBY RPM (Rebated Precision Magnum) is based on Weatherby's 6.5 RPM case necked up to accept .338 caliber bullets. The rebated rim lets it run through a standard long action instead of a beefy magnum action, keeping the rifle lighter. It is a great fit for elk, moose, and big bears where you want serious energy on target.
How bad is the recoil on the 307 Alpine ST in 338 WBY RPM?
It is a magnum in a 6.9 pound rifle, so there is some push, but the factory Accubrake makes a dramatic difference, cutting felt recoil by a large margin. The 3D-Hex recoil pad on the Peak 44 Bastion stock helps take the rest of the sting out. Most folks find it very manageable from field positions with the brake on.
Can I mount a scope and aftermarket accessories on the Weatherby 307 Alpine ST?
Yes. The receiver is drilled and tapped for 8-40 screws and the cylindrical action accepts common scope bases, so you have plenty of mounting options. Since the Model 307 action shares the Rem 700 footprint, it also works with a wide range of aftermarket stocks, triggers, and rails if you ever want to change things up.
Is the barrel on this Alpine ST suppressor ready?
It is. The 24 inch spiral fluted barrel is threaded 5/8-24, which is a common thread pitch for .30 caliber and larger suppressors. Just spin off the included Accubrake and you can run a can or a thread protector instead.





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