I've never had a problem with corelokts until last year. Most of the time would be leaving a nice blood trail after 25 yards or so. Last year missed a doe dead to rights at 100yd. Went to check my scope and they were hitting all over the place. Some wouldn't even stay on a paper plate. Swapped to fusions and started hitting clover leafs again. I don't know if it was a bad batch or what but I won't be going back.