No, it's 1700fps, is when they will for sure open.I ran some numbers in my ballistics calculator and if I were able to push the 160 SBD-2 at least 3050 FPS, then I would have plenty of speed and energy on target at 1000 yards. The calculator is saying 1680fps out to 1150 with 1004 ft-lbf of energy on target.
I think I remember someone stating the SBD-2 will open up down to 1200 fps? My memory may be off though.