I loaded up some 165gr and 180gr XLCs for my 300 WSM and both shot .6" groups at 100 yards. Last fall I shot a whitetail with the 165s at 130 yards. It was a broadside double lung shot and the exit hole looked like it was about a 1.25" hole. I didn't get to see the inside because the deer was no good due to a bad shot someone made earlier in the season. If I had known the deer was no good I would have put it threw both shoulders to see how it performs. When I shoot up all of my XLCs I am going to go to the TSXs. So far I am happy with their performance.