I am working on a 7stw build and am wondering if you could provide some information on what length of mag boxes you are running. I am wanting to shoot 180 Bergers or the new 195 Bergers. Will a 3.825" inside dimensions mag box work or should I get a 4" box? Anybody with first hand experience with the round and bullet would be apreciated. The action I am wanting does not work the best with the 4" box. What is the OAL you guys are running with theses bullets.