Two weeks ago, I shot an elk with my 475 Linebaugh. I was shooting 400 gr WFNGC LBT'S at approx. 1200 fps. The first shot was to break the shoulders. [no reaction] The second shot was for the heart lungs and again no reaction. We could see the shots were good on the hide from where we were so I quit shooting. The bull went 50 more yards and piled up. Approx 10 seconds after he hit the ground there was no movement. The same day using a SRH 44 mag with 300 gr WFNGC LBT's my son shot a cow elk. After shooting 4 times I asked what is wrong. The cow showed no visible signs of being hit. He shot 2 more times and the cow stood still for almost a minute while he was reloading, then just fell over. After gutting we found 5 of 6 hits including the heart and shoulders broke down. Hard to believe the hits they can take. Extremely tough animals! Congrats on your success!!!!