I've taken 3 elk with a 300 grain sst. All 3 went down almost where they stood. One cow I hit up high in the back bone went down so hard all four legs went straight up in the air, she was almost as large of cow as any bull. All three were about 80 yards when shot. Prior to using the 300 grain sst, I used the 250 grain sst. I had taken two elk the the 250 grain, results were not nearly as impressive. When using the chorograph the energy retained favored the 300 grain sst and the results showed in the field.