I'm not MD, but I don't think Nosler offers the 175gr 7mm bullet in their BT's. It's been my experience that current Nosler BT's made for game are pretty stout compared to their first versions. Also, the Nosler site claims BT's over 30 cal. have heavier jacket. I have seen a 180gr Nosler BT out of a 30.06 blow right through the chest of a large 6 point bull elk. I hope the reason John hasn't responded is because he's hunting or catching a big trout.