I can personally account for the performance of the PT Golds Pete. Them suckers hit like a freight train at medium to higher velocity impacts and they hold together very well. But they don't open that well at lower velocity impacts. They open, just not a whole lot. I am going by the damage for the most part as I have only recovered 1 and that was from a 1200 pound Bison Cow shot at 72 yards. Bullet was a 260 grain .451, Not sure which Sabot I was using at that time, and I think the charge was 130 grains T7p. I weighed it when I got home and it was right at 255 grains.