Here is a cow Bison I shot with my .375 Cheytac this year at a distance of 350 meters. While it was not a real long range shot it was the only shot I had. The bullet went through the lungs and destroyed the Aortal arch. She took two or three steps and died. The rifle was made by John VanDyke
Here is the exit wound from the Barnes X bullet at 3400 FPS (Barrel is 34").
Here is the cow Bison that I took last year at 400 meters or so with a .50 BMG. I used a Barnes X bullet for that one as well.
She spun around twice and died. The bullet passed though the lungs and exited with a 2" exit wound. When we opened her up the lungs were destroyed as well as some of the arteries. Next year I am going to try to get a Bull as I am going to have a new .50 built (boltgun with 36" barrel).
Both of them were average sized cows (12-1400 lbs)
Hope you like the pictures
A R McCain