19" barrel on my Sako carbine, so I don't get the max velocities, but the 70-grain Hornady gives excellent accuracy. I've used the old 3031, starting at some 38.0 grains and working up a bit. (Back when it was still DuPont IMR, I used 40.0 as a max.)
I've not loaded any of the 55-grainers, yet...
Art