Has anyone loaded the .375 Ultra Mag with the RM 375 gr bullet. I have been looking for something like this and want to try them. It would be helpful to have a little starting data from others who have already taken this path. I have a custom #1, so OCL is not an issue. This thing shoots under 1 moa. Has 26" Shilen. Also have chrony and private range to 600, so will be posting data when I'm done. Jim