This is an example of one, so take it for what it's worth...I used the Hornady 225 gr. .338 Interlock SP in a .338-06 to take my first bull elk in '91. I seldom recover a bullet from a game animal, but this bullet traveled lengthwise through a lot of elk. Core was still in the jacket and there was some mushrooming , but not the textbook kind. Bullet weighed 181 grs.