We took two elk today with the Berger 300gr Hybrid OTM from my .338 Lapua mag. Bullet performance was pretty much identical with 1 1/4 to 1 1/2" exits.
First was at 825 Yards and a rib cage shot. Impact velocity was 1966 fps. Exit was about 1 1/4"
Second one was a bedded cow at 816 yards. Impact velocit was 1975 fps. Cow was slightly facing away. Entrance was in the crease behind the near shoulder. Exit was far shoulder. I was kinda surprised that the exit was only 1 1/2" or so. But this exit is deceiving. Note the bone fragments on he hair around the hole. Inside was total destruction and the exit shoulder was a loss.
Elk died quick and clean. I am pleased.