The Weatherby Mark V Accumark in .338-378 Weatherby Magnum (brand part no. MAM01N333WR8B) is built on the legendary Mark V action, long considered one of the strongest bolt-action platforms ever made and designed specifically to harness Roy Weatherby’s high-pressure signature cartridges. A 26-inch fluted #3 contour barrel and hand-laid fiberglass stock with aluminum bedding blocks deliver Weatherby’s sub-MOA, 3-shot-group guarantee at 100 yards with factory or premium ammunition. The Mark V’s low 54-degree bolt rotation speeds up reloads and lets scopes mount closer to the bore, while a TriggerTech trigger provides a true zero-creep break with externally adjustable pull.

Key Specifications

• Chambered in .338-378 Weatherby Magnum for extreme long-range knockdown power.
• Backed by a sub-MOA, 3-shot-group guarantee at 100 yards.
• 26-inch fluted #3 contour barrel for accuracy and reduced weight.
• 1-in-10 inch twist rate matched to .338-378 bullet weights.
• Low 54-degree bolt rotation for faster reloads and low scope mounting.
• TriggerTech trigger with true zero-creep break, externally adjustable.
• Fluted, forged one-piece bolt with relief ports and full shroud.
• Hand-laid fiberglass stock with aluminum bedding blocks.
• 3-position safety that also serves as a bolt lock.

Frequently Asked Questions

What accuracy guarantee does this rifle carry? Weatherby backs the Mark V Accumark with a sub-MOA, 3-shot-group guarantee at 100 yards.

Why is the Mark V bolt rotation notable? At 54 degrees, it is among the lowest in its class, speeding up reloads and clearing low-mounted scopes.

Can the trigger be adjusted? Yes, the TriggerTech trigger is externally adjustable.

Buy the Weatherby Mark V Accumark Rifle .338-378 Weatherby Magnum

An extreme long-range Mark V rifle built to harness Weatherby’s most powerful signature cartridge. Order it from our Weatherby lineup at our Lubbock, Texas gun shop for fast, insured shipping to your FFL, part of our full bolt action rifles selection.