Ridge Runner, I will be the first to admit I have limited experience with the BT bullets but what I have seen with them they expand to violently and cause way more damage than I like on deer. I know that Nosler has now thickened the jackets to help keep them from coming apart as much. I haven't used them on large game since my experience with the deer I shot. It did kill it and it didn't go far but it sure wasted alot more meat than other bullets I have used in the past.