Ive used the 85 gr Partition on several occasions and they have performed great.
The pics are a 140 gr 284 cal shot out of a 7mm Rem mag. Shot a doe from stem to stern. Found the bullet just under the skin in the thoracic inlet.
Had basically the same thing happen with a forkhorn mule deer buck, using the same bullet from a 7x57. The buck was facing me at around 50 yards in lodgepole pine timber, and the bullet landed in the "dimple" at the base of his neck. The buck collapsed, but I never found the bullet during field-dressing, though it obviously went through the diaphragm into the abdominal cavity.
Found it a year or so later, when Eileen bit into a round steak. She thought it was a piece of bone, but it turned out to be a perfectly expanded Partition.