Greetings Bumblefoot,
I have not loaded a start load for over 40 years. Usually start with a mid load. I don't work up 0.3 grains at a time either. These have always seemed like a lot of busy work and wasted components to me. Charliehorse has the right idea in running your finished result over someone elses chronograph to check where you are, prefarably before you get to max. You are on the right track. I have found the Hodgdons / ADI data generally very good. A lot of my loads are under max.
Regards Grandpamac.
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