You should have had pass thru's. I shoot 165gr sierra bthp, they are not super strong bullets but do a very nice job. I cant remember one of them not passing through before, however I always try to shoot for the lungs. I loaded up some 168gr match bullets several years ago and thought I would try them for hunting. Shot 2 bucks with them both exploded inside the animal with no pass thru, both dropped in the tracks, but I want a bullet that will pass thru. Why yours didnt pass through I have no idea.