The Weatherby Mark V Accumark (brand part no. MAM01N303WR8B) is a bolt-action rifle chambered in .30-378 Weatherby Magnum and built around Weatherby’s flagship Mark V action for shooters who want the most velocity a .30-caliber cartridge can deliver. A 26-inch fluted stainless barrel keeps weight manageable while venting heat on long strings at the bench, and the black synthetic stock stands up to weather without upkeep. An AccuBrake ST muzzle device tames what would otherwise be punishing recoil from this magnum-of-magnums cartridge, and an adjustable trigger lets long-range shooters fine-tune the break. This rifle is built for shooters chasing extreme long-range performance above all else.

Key Specifications

• Chambered in .30-378 Weatherby Magnum, one of the fastest .30-caliber cartridges in factory production.
• The barrel measures 26-inch fluted #3-contour barrel.
• Rifled at a 1:10-inch twist, stabilizing heavy bullets at extreme velocity.
• Finished in stainless steel with a black synthetic stock, built to resist corrosion in any weather.
• Feeds from a 2-round magazine with a hinged floorplate, sized for this magnum cartridge’s larger case.
• Fitted with an AccuBrake ST muzzle device, cutting felt recoil from a famously hard-kicking round.
• Includes an adjustable trigger, letting shooters dial in pull weight for precision work.
• Threaded 5/8-24 at the muzzle, ready to accept the included brake or a suppressor.
• Uses a 3-position safety, adding a locked-bolt setting for safer carry and unloading.

Frequently Asked Questions

What cartridge does this Mark V Accumark fire? It is chambered in .30-378 Weatherby Magnum, one of the fastest .30-caliber cartridges available.

Does it include a muzzle brake? Yes, it ships with an AccuBrake ST installed to manage the cartridge’s substantial recoil.

Is the trigger adjustable? Yes, the Mark V Accumark uses an adjustable trigger for a tunable, consistent break.

Buy the Weatherby Mark V Accumark .30-378 Weatherby Magnum Rifle

Extreme long-range performance calls for an extreme cartridge, and the Mark V Accumark in .30-378 Wby Mag delivers exactly that. Order this Weatherby rifle from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and browse our full range of bolt action rifles.