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WEATHERBY MDX01N378WR8B MARK V DELUXE 378 WBY MAG 26" BBL Guns International #: 103529609 Seller's Inventory #: MDX01N378WR8B Category: Weatherby Rifles - Mark V - Rifles - American Bolt Action Seller's Information When emailing or calling sellers direct, please mention that you saw their listing on GunsInternational.com Seller: Garys Gun Shop SD Member Since: 11/7/25 State: South Dakota Zip: 57105 Country: United States Phone: (605) 332-6119 Ext. 2 Platinum Seller Number of Active Listings: 422 Seller: FFL Dealer Return Policy: 3 day inspection and return policy on used guns. NO RETURNS ON AMMUNITION. Optics over $200 may be held for payment to process and will be shipped with ADULT SIGNATURE REQUIRED. Ammunition, Firearms, Knives, and Magazines will be shipped ADULT SIGNATURE REQUIRED. Payment Types Accepted: credit card, bank check, money order About Us: Garys Gun Shop is a family-owned firearms retailer in Sioux Falls, South Dakota, serving customers for over 30 years with exceptional service and quality firearms. We maintain an inventory of more than 2,000 new and used firearms, specializing in premium brands including Wilson Combat, Nighthawk Custom, Cooper Firearms, Benelli, Browning, Weatherby, and Winchester. Our knowledgeable staff helps each customer find the perfect firearm. We also operate a 12-lane indoor range and gunsmithing services. You Can Purchase This Item Now, By Following This Link to garysgunshop.com Description: The Weatherby Mark V Deluxe (MDX01N378WR8B) is a bolt-action centerfire rifle chambered in .378 Wby Mag with a 26-inch high-gloss number 3 contour threaded barrel, a factory-installed AccuBrake ST, and a hand-finished AA walnut stock, built for dangerous game hunters and Weatherby collectors who demand the combination of legendary magnum performance and classic American craftsmanship in a production rifle. This is the flagship wood-stocked 378 Weatherby Magnum bolt-action rifle in the current Mark V lineup, offered for hunters who pursue the largest and most formidable game animals in the world. Key Features Part number: MDX01N378WR8B Caliber: .378 Wby Mag Capacity: 2+1 rounds Barrel length: 26 inches, number 3 contour, high gloss Barrel thread: 5/8-24 TPI Total barrel and action OAL: 28 inches with AccuBrake ST Twist rate: 1:12 inches, right-hand Stock: Gloss AA walnut, Monte Carlo comb with cheekpiece Checkering: Fineline diamond-point Forend and grip cap: Rosewood with maplewood spacers Pad: Pachmayr Decelerator Length of pull: 13.5 inches Overall length: 48.75 inches Weight: 8.25 lbs Sights: None Bolt: Nine-lug, 54-degree bolt throw Country of manufacture: USA Special Features The Mark V nine-lug bolt distributes chambering pressure across three rows of three lugs each, providing a locking surface area designed to handle the extreme pressures generated by the .378 Wby Mag cartridge across a service life measured in thousands of rounds. The 54-degree bolt throw keeps the bolt handle travel short and the shooter's hand close to the grip, allowing faster cycling between shots than standard 90-degree bolt designs on a rifle built for large game at extended range. The factory AccuBrake ST is integrated into the 5/8-24 threaded muzzle at the time of manufacture, adding 2 inches to the total barrel OAL and directing propellant gases laterally to reduce muzzle movement and maintain target visibility through the scope after the shot. The AA walnut stock features fineline diamond-point hand checkering on the grip and forend, rosewood tip and grip cap with contrasting maplewood spacers, and a Monte Carlo comb with cheekpiece that positions the shooter's eye correctly behind a scope without requiring additional riser hardware. The Pachmayr Decelerator recoil pad absorbs impact energy at the stock heel during the firing cycle, extending comfortable shooting sessions for hunters preparing for safari or running confirmation groups before a trip. Practical Benefits The .378 Wby Mag drives heavy-for-caliber bullets at velocities that maintain terminal performance at distances beyond what most standard dangerous game cartridges can sustain, giving hunters a flat-shooting option for both close-range work and extended field shots on large and dangerous species. The 8.25 lb weight and Monte Carlo cheekpiece position the shooter precisely behind a large objective scope, which dangerous game hunters and long-range big game hunters carry for positive target identification at distance. The threaded muzzle and pre-installed AccuBrake ST mean you can run the rifle as-delivered or remove the brake and install a suppressor or alternate muzzle device without additional machining. Whether you are preparing for a once-in-a-lifetime dangerous game hunt or adding the crown jewel of your Weatherby collection, your Mark V Deluxe (MDX01N378WR8B) gives you a factory-accurate, hand-finished rifle chambered in one of the most powerful production cartridges ever built. The Weatherby Mark V Deluxe (MDX01N378WR8B) in .378 Wby Mag is a proven platform and a confidence-building choice for the serious big game hunter or collector who wants a finely crafted American bolt rifle built around the most capable cartridge in the Weatherby Magnum family. PHOTOS SHOWN ARE OF LOG # 25-02064 AND WILL BE THE RIFLE YOU RECEIVE SHIPPING TO AK OR HI WILL BE EXTRA SOLD Rifle Caliber: .378 Weatherby Magnum Manufacturer: WEATHERBY Model: MARK V Barrel Length: 26 Caliber Info: 378 WBY MAG Condition: NEW Barrel Type: THREADED