Ok Lets talk .300 win mag. What dies are you using and what components. I am looking for a load to keep me supersonic out to 1500 yards (208 Gr Amax???) Rifle has a 26 inch Kreiger #10 MTU contour 1/10 twist with brake. Also what is in you opinion a good tube length for this gun? 26" seems to me to be about correct sense to .338 LM and .338 edge seems to like 30"