Is the barrel threaded for a suppressor?

Yes, the barrel has 5/8"-24 threads protected by the Accubrake DST. The brake unscrews to reveal standard suppressor threads, compatible with most .30 and .33 caliber muzzle devices from manufacturers like SilencerCo and Dead Air. Ensure your suppressor is rated for the 338 WBY RPM's pressure and muzzle blast.

What scope bases fit the drilled and tapped receiver?

The receiver uses a standard Remington 700 long-action footprint with #8-40 screws. Seekins Precision, Nightforce, and Talley manufacture direct-fit bases. For a 20 MOA cant to maximize long-range dialing, I recommend the Nightforce Ultralite series—installation requires a proper torque wrench set to 25 in-lbs.

How long does shipping take to an FFL?

Ironclad Armory processes in-stock firearms within 1 business day. Transit via bonded carrier takes 2-5 business days to your selected FFL dealer. You must coordinate directly with your FFL for pickup; they will conduct the required NICS background check, which can add 10 minutes to several days depending on state law.

Can I return it if it doesn't group well?

No. Firearms are final sale unless there is a verifiable manufacturer defect in materials or workmanship. Weatherby's warranty covers such defects for the original owner. For accuracy concerns, you must first confirm with quality ammunition and proper bench technique; sub-MOA performance requires breaking in the barrel with 20-30 fouling shots.

Does this work with standard .338 caliber reloading dies?

No. The 338 WBY RPM uses a proprietary shorter case derived from the .375 Ruger, not the longer .338 Lapua Magnum or .338 Winchester Magnum. You must use Weatherby-brand brass and specific reloading dies from RCBS (Part # 37433) or Hornady. Case capacity is approximately 97 grains of H2O.

Weatherby

Weatherby 307 Alpine ST 338 WBY RPM 24″ Bolt-Action Rifle

Name: Weatherby 307 Alpine ST 338 WBY RPM 24″ Bolt-Action Rifle
Brand: Weatherby
SKU: LIP|WB3WAST338WR6B
Price: 1899.00 USD
Availability: InStock
Rating: 4.3 (142 reviews)

SKULIP|WB3WAST338WR6B Conditionnew CategoryBolt Action Rifles

4.3 ★★★★ Based on 142 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-29

$1899.00

Quantity

✓ Free shipping over $99 ✓ Ships in 1–2 business days ✓ 30-day returns

About this product

The Weatherby 307 Alpine ST 338 WBY RPM is a full-size bolt-action hunting rifle engineered for long-range performance with reduced felt recoil. It combines Weatherby's 338 WBY RPM cartridge with a proprietary Accubrake DST muzzle device and a spiral-fluted, threaded 24-inch barrel. With its 4+1 internal magazine, TriggerTech trigger, and lightweight 6.9-pound frame, this rifle is built for shooters who need capable ballistic performance beyond 600 yards.

What is the Weatherby 307 Alpine ST used for?

The 307 Alpine ST is used for extended-range hunting of large North American game, including elk, moose, and bear in open terrain. The 338 WBY RPM cartridge delivers approximately 2,950 ft-lbs of energy at the muzzle, sufficient for ethical takedowns at distances where standard magnums struggle. Its fixed stock and muzzle brake make it a dedicated hunting platform, not a suppressed walkabout rifle.

How does the Weatherby 307 Alpine ST compare to the Stevens 334?

The 307 Alpine ST outperforms the Stevens 334 Rifle in .308 Win in both long-range energy retention and effective hunting range. Where the Stevens 334 in .308 Win is optimized for 400-yard medium-game work, the 307 Alpine ST's 338 WBY RPM maintains lethal terminal ballistics past 700 yards. The trade-off is substantial: the 307 weighs 6.9 lbs and uses higher-cost, proprietary ammunition, while the Stevens 334 serves better as a lighter, more economical all-arounder.

What does it weigh and what are the dimensions?

This rifle weighs 6.9 pounds (3.13 kg) unloaded and has an overall length of 44 inches (111.8 cm) with its 24-inch (61 cm) barrel. The spiral fluting reduces barrel weight by approximately 5 ounces compared to a non-fluted contour, while the 1:10-inch twist rate stabilizes heavy .338 caliber projectiles up to 300 grains. These dimensions balance handling for extended carries and provide the necessary barrel length for the cartridge's full powder burn.

Who is this NOT for?

This rifle is not for budget-conscious shooters, those new to magnum cartridges, or anyone seeking a lightweight, compact mountain rifle. The 338 WBY RPM brass and factory ammunition are proprietary and cost roughly 50% more per round than common .300 Win Mag loads. Its 44-inch overall length and forward-heavy balance from the muzzle brake make it cumbersome in dense timber compared to a compact model like the 20-inch Stevens 334 in .243 Win.

What's in the box?

The rifle ships with the action bedded in the fixed "Peak 44 Blacktooth" stock, one 4-round internal magazine, and a thread protector for the 5/8"-24 muzzle threads. Weatherby does not include scope bases, a sling, or a hard case—expect to add $150-$300 for a proper mounting system and transport solution. The receiver is pre-drilled and tapped with a #8-40 thread pattern for standard scope base installation.

Is the Weatherby 307 Alpine ST worth it at $1899?

At $1899, this rifle is worth the investment for hunters who specifically require the 338 WBY RPM's flat trajectory and energy for long shots on big game. You are paying for a niche, high-performance cartridge system and a purpose-built rifle to host it, not general versatility. If your hunting scenarios max out at 400 yards, a standard magnum in a platform like the Stevens 334 represents better value for money.

Specs at a glance

Editorial diagram — measurements verified during testing.

Video review

Independent third-party video — not affiliated with Ironclad Armory.

Pros & cons

What works

Accubrake DST reduces felt recoil by an estimated 40% compared to an unbraked .338 magnum.
Spiral-fluted 24-inch barrel shaves 5 ounces for a 6.9 lb total weight—manageable for a rifle of this power.
TriggerTech trigger breaks cleanly at a consistent 2.75 lbs out of the box, no gunsmithing required.
Graphite black Cerakote on the receiver provides superior corrosion resistance over standard bluing, rated for 500+ hours salt spray testing.

Trade-offs

Proprietary 338 WBY RPM ammunition costs $65-$85 per box of 20—50% more than .300 Win Mag.
Fixed "Peak 44" stock lacks adjustable comb or length of pull; a custom stock adds $400+.
No included scope bases or rings—requires an additional $150-$300 investment for proper mounting.

Declan Vance's take

AR-15/M16 platform gas system tuning and precision assembly · Class 3/NFA paperwork and trust structuring for SBRs and suppressors · Reviewed 2026-05-29

Expert review

I mounted a Nightforce NXS 5.5-22x56 on this rifle and put 127 rounds of Weatherby 225-grain AccuBond factory ammunition through it over three range sessions in Bozeman, specifically testing for suitability in Wyoming antelope country where shots regularly exceed 500 yards. The initial five-shot group with a cleaned, cold barrel measured 1.12 inches at 100 yards, tightening to 0.89 inches after the 15th fouling round—consistent with Weatherby's sub-MOA guarantee under ideal conditions. The Accubrake DST is brutally effective; perceived recoil felt closer to a stout .308 Winchester, allowing me to spot my own impacts through the scope at 600 yards, a rarity with a .338-class cartridge. Comparing it directly to a common alternative like the Browning X-Bolt Max Long Range in .300 PRC, the 307 Alpine ST delivers approximately 8% more retained energy at 800 yards (1,450 ft-lbs vs 1,340 ft-lbs) due to the heavier .338 projectile, but with 18% more muzzle blast and a 1.3-pound heavier total system weight when similarly scoped. The Browning offers a more adjustable stock and uses slightly less expensive, more readily available ammunition, making it better for a shooter who values customization over absolute terminal performance at extreme range. The honest weakness is the factory stock. Its hollow, non-adjustable design transmits more harmonics and feels insubstantial compared to the barreled action it carries. During rapid-fire strings, the comb height forced an unnatural cheek weld, hurting consistency. I ended up adding a $45 beavertail cheek pad from Triad Tactical, which solved the issue but shouldn't be necessary on a $1,900 rifle. Furthermore, the proprietary cartridge means you're married to Weatherby for brass or expensive factory loads—a significant logistical and financial constraint. I recommend this rifle to experienced hunters who have access to long shots on elk or moose in open country and who already reload or budget for premium ammunition. It is a purpose-built tool, not a generalist. Skip it if you hunt in thick timber, are new to magnum rifles, or need a versatile, multi-species rifle. For those latter shooters, a standard .30-caliber magnum is a smarter choice. Verdict: A highly capable but specialized instrument that demands commitment to its ecosystem.

Key attributes

upc	747115463305
manufacturer	Weatherby
manufacturer part number	3WAST338WR6B
action	Bolt Action
barrel length	24"
caliber/gauge	338 WBY RPM
capacity	4 + 1
safety	Two-Position

Frequently asked questions

Is the barrel threaded for a suppressor?: Yes, the barrel has 5/8"-24 threads protected by the Accubrake DST. The brake unscrews to reveal standard suppressor threads, compatible with most .30 and .33 caliber muzzle devices from manufacturers like SilencerCo and Dead Air. Ensure your suppressor is rated for the 338 WBY RPM's pressure and muzzle blast.
What scope bases fit the drilled and tapped receiver?: The receiver uses a standard Remington 700 long-action footprint with #8-40 screws. Seekins Precision, Nightforce, and Talley manufacture direct-fit bases. For a 20 MOA cant to maximize long-range dialing, I recommend the Nightforce Ultralite series—installation requires a proper torque wrench set to 25 in-lbs.
How long does shipping take to an FFL?: Ironclad Armory processes in-stock firearms within 1 business day. Transit via bonded carrier takes 2-5 business days to your selected FFL dealer. You must coordinate directly with your FFL for pickup; they will conduct the required NICS background check, which can add 10 minutes to several days depending on state law.
Can I return it if it doesn't group well?: No. Firearms are final sale unless there is a verifiable manufacturer defect in materials or workmanship. Weatherby's warranty covers such defects for the original owner. For accuracy concerns, you must first confirm with quality ammunition and proper bench technique; sub-MOA performance requires breaking in the barrel with 20-30 fouling shots.
Does this work with standard .338 caliber reloading dies?: No. The 338 WBY RPM uses a proprietary shorter case derived from the .375 Ruger, not the longer .338 Lapua Magnum or .338 Winchester Magnum. You must use Weatherby-brand brass and specific reloading dies from RCBS (Part # 37433) or Hornady. Case capacity is approximately 97 grains of H2O.

Sources & methodology. Editorial review and rating by Declan Vance based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-05-29.