I haveused the 100gr sierra SBT gameking and the 85gr HPBT both with excellent results. I always stuck with the 100gr sbt because it consistantly shot better than any other bullet out of my browning abolt. I have shot several michigan whitetails with this bullet at ranges from 70-280 yards, always with the same results small enterance with a exite the size of a nickel to a quarter. All one shot stops, never had a deer make it more than 20 yards after being hit. I started shooting the federal premium load when I went to college and have to admit I couldn't load it myself any better. They clocked at around 2850fps out of my 20" Abolt.