Description
The .300 Winchester Magnum has been dropping elk, moose, and long-range mule deer for decades, and the Vanguard Obsidian gives you that proven cartridge in a rifle backed by Weatherby's Sub-MOA guarantee. That means a three-shot group of .99 inches or better at 100 yards with Weatherby factory or premium ammo. The 24 inch cold hammer forged barrel wears a #2 contour with a 1:10 twist that stabilizes the heavier bullets most hunters prefer in this chambering, and the muzzle comes threaded 1/2×28 so you can spin on a brake to tame magnum recoil or run a suppressor without a trip to the gunsmith.
A Trigger That Punches Above Its Class
The Vanguard Obsidian ships with an adjustable two-stage match trigger that can be dialed down to 2.5 pounds, which is a genuinely nice trigger to find on a working rifle at this level. The action is built on a one-piece forged and machined receiver with an integral recoil lug, and the M16-style extractor yanks spent magnum brass out with authority. A fully enclosed bolt sleeve adds a layer of protection by redirecting gases in the rare event of a pierced primer, and the three-position safety lets you cycle the bolt to unload with the safety still engaged.
Built for Ugly Weather
The all-black look is more than styling. The synthetic Monte Carlo stock shrugs off rain, snow, and rough truck rides, and the raised comb lines your eye up naturally behind a scope, which matters since this rifle comes without sights and with a receiver drilled and tapped for optics. A recoil pad takes some of the sting out of the .300 Win Mag, and the hinged floorplate holds three rounds with quick, no-fuss unloading at the end of the day.
Why the Vanguard Obsidian Earns Its Spot
The Vanguard action has a long track record of smooth cycling and dependable accuracy, and the Obsidian keeps everything that works while adding the threaded muzzle a lot of hunters ask for these days. If a do-it-all magnum hunting rig is on your list, this one is tough to argue with.
Key Specifications
- Manufacturer: Weatherby
- Model: Vanguard Obsidian
- MPN: VTX300NR4T
- UPC: 747115454440
- Caliber: .300 Winchester Magnum
- Action: Bolt Action
- Barrel Length: 24" Cold Hammer Forged, #2 Contour
- Muzzle Thread: 1/2×28 TPI
- Twist Rate: 1:10"
- Capacity: 3 Rounds, Hinged Floorplate
- Stock: Black Synthetic Monte Carlo with Raised Comb
- Trigger: Two-Stage Match, Adjustable to 2.5 lbs
- Safety: 3-Position
- Sights: None, Receiver Drilled and Tapped for Optics
- Accuracy Guarantee: Sub-MOA (.99" 3-shot group at 100 yds with premium ammo)
What’s Included
- Weatherby Vanguard Obsidian rifle
- Owner's manual
Frequently Asked Questions
What is the thread pitch on the Vanguard Obsidian's muzzle?
The 24 inch barrel is threaded 1/2×28 TPI, so you can mount a muzzle brake or a suppressor with a matching thread pitch or adapter. A brake is a popular add-on for this rifle since it takes real bite out of .300 Win Mag recoil at the bench.
Does the Weatherby Vanguard Obsidian come with a scope or sights?
No, this rifle ships without iron sights or an optic. The receiver is drilled and tapped for scope bases, and the raised Monte Carlo comb is shaped to line your eye up behind a scope, so plan on adding bases, rings, and glass before heading to the range.
Is the Sub-MOA guarantee legit on the Vanguard Obsidian?
Yes, Weatherby guarantees a three-shot group of .99 inches or less at 100 yards when using Weatherby factory or premium ammunition. Owners regularly report tight groups with quality hunting loads, and the cold hammer forged barrel and adjustable two-stage trigger do a lot of the heavy lifting there.
How does the magazine work on this rifle?
The Vanguard Obsidian uses a hinged floorplate rather than a detachable box magazine, holding three rounds of .300 Win Mag. You load from the top through the ejection port, and the floorplate drops open for fast, easy unloading when you're done for the day.





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