You might take a look at the NORMA burn chart. Nothing else like it anywhere out there. Priceless for wildcatting and unpublished load combinations. It uses IMR4350 as the baseline. Then rates the powders both ways from there, listing relative PRESSURE in addition to relative velocity. Unfortunately, it hasn't been updated for a while. We have been subjected to a virtual blizzard of 'new and improved' powders in the last few years.
