I have used and witnessed the devastating effects of the Barnes Pistol Bullet. At 1,000fps or 2,100 fps, they open every time. They cause a hydraulic action similar to a blender. What goes in at a 45 caliber, exits as a 75 caliber. The ever popular soggy phonebook test, 95% or better weight retention, 5" cavity, they open quick and drive all the way, no jacket separation. I have spent 100's of dollars on XTP's, XTP-Mags, Sierra etc and will never go back. I shoot a .454 at 1,600 fps, have seen them out of .45 Colt(strong framed) 1,100 fps, BFR 45-70 at 2,100 fps, they all do a number on whitetails. Witnessed 3 Barnes Pistol Bullet one shot kills this weekend, 2 over 125 yds, they are capable of great accuracy and it was evident that they opened. I suggest that they are worth checking out.