I've been thinking about buying a 375 Ruger. Either a Ruger guide gun or a left handed bear hunter from the Savage custom shop. The big selling point on both rifles is the brake. As I'm sure you know the ports on the Savage twist closed. The ruger comes with a matching weight to replace the brake.
Of course if I could find a brake with similar characteristics I might just build my own. Any leads? My Google-fu is weak.