I haven't found any powder that will shoot more accurately than Bullseye....some shoot just as well but not better . 2.7 or 2.8 seems to just be a magical combination.
In my search for accuracy, I shot NRA Bullseye Match for years, I've tried Unique , 700X, HP-38 , Red Dot , 231, Accurate #2 and #5 and long discontinued Alcan #5. When necessary I use Red Dot in place of BE , it's just as accurate in my book.
None beat Bullseye in the accuracy department!
I don't believe the burning rate adds to recoil, 2.7 grs of BE is the softest recoiling load I know of.
Gary