Here is our first experience....
Son shot a buck yesterday. 60 yards shot slight quartering to shot. Entered right behind onside shoulder and bullet traveled length of buck resting on the offside hide just in front of the rear leg / ham. Bullet put a hole in the ribs big enough for me to stick my fist in. Destroyed one lung and jellied the liver.
Jacket and led were still attached and only came apart as we dug it out of the hide / fat. 175 grains retained weight for 51%. Large chunk of lead fell out of the fat when cutting the backstraps and tenderloin out.
Overall....bullet appears to have performed well. I do with it would retain a little more weight, but all in all it killed very quickly. I would not trust it to perform on a shoulder of an elk as I feel it may not get great penetration.