I tried the 150 Winchester Supreme Ballistic Silvertips in my model 788, .308 a few years ago. They did pretty good i killed two with them. I heard alot of talk about how fragile they were and that you only wanted to shoot them in wide open spaces. I shot into alot brush on a small buck, luckily i must not have hit any limbs because i hit the buck right behind the front shoulder. It did fragment inside him though, i had about 4 exit holes. They werent too bad off bullets though i prefer the 165 Trophy Bonded Bearclaws.