Of the 3 powders you listed, I'd choose StaBall6.5, Varget, then 4895 and in that order. I say that because StaBall6.5 has proven to be a winner in both accuracy and velocity in 3 different creedmoors I've loaded for and it trumps Varget in velocity for every bullet I've tried with it. I realize velocity doesn't mean squat if it's not accurate, but StaBall6.5 is a great combo of both.
