Based on my testing in water soaked phone books, the Failsafe and the Lost River Ballistics are the two bullets that provide the most penetration and the smallest wound channel of any bullet that I have tested in 35 years of doing this. I guess what that means in practical terms is that they will give absolutely reliable penetration and sometime not kill real quickly on broadside rib shots where no bone is encountered. I'm surprised they are getting rid of the Failsafe - I thought they filled a useful niche, even though they are probably a waste for most thin skinned North American game.