I hear what you're saying but a better case fill or even a compressed load from a higher charge can surely lead to more consistency as there's less space for the propellant to move around differently? Don't know.
I use it under 69 gr TMKs too, for 52/55 gr bullets I use TAC and for 40s I use exterminator. May have to change that soon though as no one knows when any is coming in!