Weatherby Model 307 Adventure SD 6.5 Creedmoor Graphic Black Cerakote Bolt Action Rifle - 22in - The Adventure SD is built on Weatherby's newest bolt action rifle platform, the Model 307. Meant to complement the historic Mark V and Vanguard lineups, the Model 307 action is a 2-lug, fully cylindrical action compatible with many aftermarket accessories. Model 307 is designed to accommodate the vast offerings of stocks, triggers, rails, mounts, and magazines that exist in today's marketplace. The Adventure SD features a fancy walnut stock giving this rifle the perfect blend of old-school look with a new-age Weatherby action.