My 7 mag shoots 3 150 grain bullets into a hole you can cover with a dime at 100 yards quite often. Never has liked 160’s at all. I’ve killed several elk using Barnes & Nosler 150’s with good results. Your partitions are perfect elk medicine. But they aren’t deer a bullet through the chest at 200 yards might just make them look at you & run over the hill - they will die but less quickly & dramatically than deer by a long way depending on shot placement.