Just for information, my old Dupont Guide shows a maximum load of 32 grs. of IMR 4227 with a 110 gr. bullet in the .308 for a velocity of 2835 fps. With a 150 gr. bullet, the maximum load is 26 grs. for 2260 fps.
I would think a 125 gr. bullet should be easily driven to 2400-2500 fps. with this powder. E