@grandpamac Your idea on 308 starting loads being around max for 30-40 holds some merit
Using Nick Harvey's 9th Edition
I have compared 308 starting loads with 303 max loads and for most of the powders they are the same or very near the same.
The reason to compare with the 303 data is that I consider the 303 and 30-40 to be one and the same in the action I am using.
This useful option to compare starting and max loads will be useful in getting some useful options for powders like W748 and W760 which I have a reasonable amount of, but hadn't found any useful 30-40 specific data on
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