Used them this year. Took two deer, one at 30 yards and one at 220 yards with 300 wsm 165gr Fusion ammo. The one at 30 yards was shot through neck and dropped in it's tracks - little difference between entry and exit points of bullet, the one at220 yards ran about 40 yards, double lung shot - only damage was to lungs, heart and everything else were still intact - exit wound might have been the size of a quarter.I've found the ammunition to be as accurate as the 150gr. BST's I was using.