Introduced by Roy Weatherby in 1958, the Mark V® action was designed to be the strongest action in the world. Roy wanted to create a high-quality, accurate, and powerful rifle for hunting that could handle his high-velocity cartridges.
When designing the Mark V action Roy and his team didn’t even consider how hard it would be to manufacture, they just focused on building the best and strongest action. Unlike most modern actions the Mark V’s receiver features an integral recoil lug and a bolt that are constructed from one solid piece of material. This process allows for a stronger action with tighter overall tolerances. The bottom metal is also machined and doesn’t use plastic like other platforms.
The Mark V lineup features a unique nine-lug and six-lug bolt design that allows for a smooth lock-up and an efficient 54-degree bolt throw.
The locking lugs on the Mark V action differ from traditional designs as they are separated and stacked, creating more surface area and lock up than the conventional solid large lug design.
The result is maximum lug contact and the strongest action on the market, able to withstand the high velocity cartridges Weatherby is known for.
