There isn't much mass left in the rear section of an 85 grain bullet when the front section of a Partition gets peeled off, which results in less penetration and odds of exit wound.
You may want to try slowing the bullet down from 3000 fps to 2700-2800 fps to reduces the risk of shearing off the front section. More mass left on the bullet will give more penetration and hopefully an exit wound for easier tracking. Try it on a couple of deer and see what happens.
I would also vote for the heavier (95+ grain) Partition or the 90 grain AccuBond, but slowing down the 85 grainer may give you improved performance - especially if a rib or bone is hit.
