I use CBC Magtech 77's almost exclusively.
In my 16" Criterion hybrid chrome lined build:
Temp. 54 deg.
Barometric pressure 30.02
Velocity: 2747.4 fps
Standard dev. 18.5
min: 2728
max: 2769
Spread: 41
I haven't clocked it in my newest 18" White Oak barrel, but I'm getting approximately 2799 fps based on some reverse engineering of my dope (matching my scope dope to elevation in my ballistic app). Both barrels shoot half MOA, even better a few times on perfect days with this load.