Judson
Glad I could help.
When you get your 450 No2 finally done and sighted in I would like you to try Hornady 350 grain bullets with what ever load you are using for the 480 grainers, and also try 81 grains of IMR 3031 with the 350's. Both with filler of course.
They shoot the same place as the 480/500 grain bullets in my No2.
My standard load, the one I use in Africa is 88 grains of RL 15 with the 450 Woodleigh Softs and Solids and the 500 gr Swift A Frame. I also used some 450 North Fork cup points and flat point solids with 89 grains of RL 15 on my last Safari.