Off to check the chamber dimensions of 6x45 & 24 Nosler. I may start with 6x45 with the option of moving up to 24 Nosler after and if it becomes a viable choice. Twist rate may have to be a compromise. Choices/Choices! I' love to talk John Dustin into making it a switch barrel! I would do 6x45/6mm ARC. He did a .30-06/.375x62 switch barrel for me on a Kimber Super America. Great work! I'm selling that now (unfired!) as I'm too old to go to Africa now especially after the stroke.