I called and spoke with a tech at IMR powders last week, inquiring about IMR Blue as a replacement for Blue Dot in loads for my Ruger
Match Champion. I was told that data was in the process of being accumulated, and "might" be available "in a year or so"! Hmmmmm.... Dunno...maybe I need to look at TrueBlue...I haven't seen any on lgs shelves, but at least data is available.