I currently use the 180 grain PSP's in my .30-06. I really like the performance of them. They grouped well for me out to 300 yards and from what I can tell, they expand pretty well. I bang/flopped this doe at 200 yards. I couldn't see the entrance wound but you can see the exit wound in the pic. The lungs were mush and there was a 3" hole in both sides of the rib cage. I couldn't find any fragments.