He had his fingers in a lot of pies! Very talented man indeed - did a lot of experimentation work as well. The 460G&A is another of his creations, was even better than the .458Lott. Its a brilliant round for buffalo etc with a 500gn pill at 2300fps, all based on the .404Jeffery case. In my humble opinion, more efficient than the Weatherby or later Rigby rounds!