So, using those burn rates, I would look at your data and comparable powders and start there? As an example, a comparable powder is W748 @ 24.7 grains to 27.6 grains would average 26.2 grains for the 80 grain bullet category. So, my starting load for the 2460 should be 26.2 grains. Is my thinking correct? Thanks for the GREAT info and help.