I had an e-mail back and forth with Hartmut Broemel which including asking why none of the IMR SR and non-rifle powders were included in the database with the IMR series? He said the rifle powders have come pretty consistently from the Canadian plant, but that the other powders had been sourced from a number of different plants around the world over time, and he didn't feel comfortable puting up a model that might be obsolete the next time a change took place. Kind of surprised me, since I didn't recall any listed loads in manuals for those powders changing over time?
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