I've been having a friendly disagreement with some friends. We all shoot 500 S&W handguns. We ran into a difference of opinion about bullet selection for large game animals (Elk, Moose, Brown Bear, Bison). I shoot a 420gr bullet @ 1550 fps that will penetrate clear through, just about anything that I hit with it, with no expansion and no weight loss. They shoot 500gr@1325fps jacketed and 700gr@1100 fps hard cast bullets they expand, but don't penetrate nearly as far. Their bullets do hold together well and don't lose much of their weight. What are the opinions here?