I have used many different premium bullets through the years for elk hunting and have become very confident in this round. Many bullets I have used over time varied in the grouping. These seem to group better. My belief, right or wrong, is that because of the solid copper composition the bullet is completely concentric in its weighting where any multilayered bullet has a chance for less than concentric weighting and thus a slightly less predictable flight. Both on the range and in the field these "Triple Shock" bullets hit things where I place them. The last four elk I have shot went down within 20 yards of impact. I am confident that when I pull the trigger these will go exactly where I sent them.
As was mentioned other places, this round in a 300 wsm is very forgiving. My 7 year old son shot a deer at 243 yards with this round in the 300 wsm off a sled and clipped the brisquit where in most cases that would have been a lost deer to the best tracker. The deer left a heavy blood trail and ran about 150 yards. I also shoot this round in my 270, 25-06, and 7mm-08.