I had a .270 Winchester ballistic tip that did something crazy several years ago. I shot an 8 point buck, completely broadside, about 70 yards, just behind the shoulder. The bullet turned at a 90 degree angle and went up the neck, busting up the vertebrae, with a small piece of the bullet coming out the hide on the other side of the neck. That was the last time I shot a ballistic tip at a deer.