They are simply the best bullet I've ever used. This was an exit on a decent sized bull, bullet just grazed the scapula going in, bull dropped in his tracks, starting rolling down the hill, leaving chunks of lung on the ground every time the shoulder touched. 303 yards, 30 Nosler, 181 grain hunter going 3270 FPS at the muzzle......and you can save the meat to the wound channel. No devastating bloodshot meat damage like I have experienced with lead core bullets. I discussed the design of these bullets with Steve at length before I tried them with regard to a number of solids I have used before and he was absolutely spot on with how they are designed to work.