Similar results for me with PBs as well. -killed lots of deer (.45 cal shooting 195gr), but blood trails and pass thrus are minimal. I'd like to experiment with another round/ I need to experiment with another round, but I have yet to get around to actually doing so. When I first acquired a Mzl, it came with a bunch of PBs and I was told they perform well in that particular gun, which is true as I get consistent groups. Note that I always strive for fully broadside, double lung shots and, though I have my gun zeroed for 150, my longest shot has been 70 yards. While, I'd be interested in finding better results (blood trial/ pass thru) and expanding my effective killing yardage, maybe the conservative nature of my setup is a good thing?