Can anyone point me towards reloading information for the .300 Remington Ultra Mag? Does a reloader need to resize .404 Jeffery cases, and how hard are they to come by? I haven't been able to find any personal pages with owner's experiences with this round. I am considering getting a Model 700 Sendero SF, but without reliable reloading information it would be useless to me. Any links or info would be appreciated. Thanks