Any Rem 700 set up for a belted magnum will be a drop in fit for the 257 STW. Does not matter if its a standard length magnum such as the 7mm Rem Mag or 338 Rem Mag or a full length magnum such as the 7mm STW, 300 Wby or the like, all the same receiver with the Rem 700s.
Kirby Allen(50)