Re: Sierra Match Kings for Hunting
41.5 - 42.5 IMR or H4895 and 43 - 44 IMR or Accurate 4064 with Federal Gold Medal Match or LC-81 cases and F210M's works great with 168 MK's in my VSSF. In lighter, commercial R-P/W-W/Fed cases, you might get away with a grain or so more powder. You should be able to get the 168's close to 2800 FPS in your VS's 26" barrel.
For whatever reason, that rifle never has taken a liking to the 155 Palmas, and haven't had a chance to really work the 175's over yet. Its absolute best group came with standard old Speer 150 Spitzers.