What Digger said :grin: I don't have a 445 SM, but I do have it's ballistic twin, the 38-55. More precisely, the 38-55 loaded using 375 Winchester cases and data. I can't imagine a need for anything hotter than a 265 grain bullet at 1900 fps. Many may naysay, but I doubt that anything on the NA continent will stand up to a chest full of that, and there ain't a Virginia Whitetail anywhere that won't kill.