Weatherby Mark V .30-378 Wby-Mag

Updated September 4, 2026

Lot number	63056
Auction	700 Lots over 500 Guns. Ammo, Optic, Swords Ends 9/13 8pmE
Date	September 13, 2026 at 8:00 PM EDT
Auction house	Accurate Gun Auctions
Location	Clearwater, Florida

Make: Weatherby Model: Mark V Caliber: .30-378 Wby-Mag Action: Bolt Bore: Bright Serial # SB051088 Condition: Very Good The Weatherby Mark V Synthetic chambered in .30-378 Weatherby Magnum is an iconic, ultra-high-velocity setup engineered for extreme long-range big game hunting. While the specific baseline "Mark V Synthetic" model tan camo stock and 30mm rings. Wetherby continues to offer the potent .30-378 caliber across its modern synthetic, fiberglass, and carbon fiber Mark V variants. Because the .30-378 is a massive, high-pressure belted magnum, it utilizes Weatherby’s legendary heavy-duty 9-lug magnum Mark V action. This provides maximum lockup strength and a short 54-degree bolt throw for rapid cycling. This is one of the fastest, hardest-hitting .30-caliber cartridges commercially available. It pushes a 180-grain bullet past 3,400 feet per second (fps), offering an incredibly flat trajectory and massive energy delivery downrange with excellent accuracy. Please see photos.

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