Hodgdon for. 75 grain IN A 223 You can use this and move up slightly as there is no comercial data on the CFE that I have seen published for the 6X45. The expansion ratio usualy lets you shoot the next heavier bullet in the 6X45 over the 223 loadings.
CFE 223 .224" 2.250" 23.0 2,680 45,200 PSI 25.0 2,876 54,400 PSI
This is their 80 grain 223:
CFE 223 .224" 2.550" 23.0 2,638 46,700 PSI 24.4 2,785 53,600 PSI
Greg
