Ron, many thanks for the CFE223 load info. I had hoped that it would yield more velocity with 500 grain bullets, but, as you have noted, it is a very slow powder for this application. Also as you said, it might do very well with 550-600 grain bullets. That brings up a question that I have not seen answered definitively: Are there any applications of the .458 Win Mag+ in which a 550 or 600 grain bullet pushed to 2100-2150 fps would be noticeably superior to a modern 450-500 grain bullet at full velocity?
