Fred: the other guys have all given you great advice. As to the notion of 'overkill'... Graybeard his own self has defined 'dead' for those of us who ofgten use the term 'overkill' to indicate a cartridge more powerful than what is required for the game we hunt. I do not recall exactly how it goes but it is something like 'there is dead, really dead and totally dead', or 'dead, dead, dead', or 'dead, totally dead and 100% dead'. I'm not really sure of the definition once it gets past 'dead', but as they say, 'dead is dead'.... HTH.....