It depends a little bit on what you start with. If you start with a McMillian A5 for example (their most popular and successful stock), you bet. It has a very wide & stiff forearm that can accommodate just about any available contour. I had a remington 5r in an H&S with a stock contour and replaced the barrel with a krieger M24 contour, it worked out quite nicely after having the forearm milled out slightly as the H&S had the room to mill out some of the forearm and still maintain a good degree of stiffness. On the other hand, all those stock manufacturers make stocks with slim forearms as well, with less "meat" to work with subsequently there are more limitations. Stick with a tactical style stock from either McMillian or Manners and you should be good to go on just about any contour out there. If you know what barrel you want, just order a stock already contoured for that barrel (and whatever action as well of course).