I shot a doe this year at 10 yards with my 270 and it left no blood or hair whatsoever. I had to track her steps best I could. I did see where she headed so I had an idea. At about 40 yards I started seeing blood and she only made it 10 yards further. Because the high velocity, the bullet pencil-holed in and hit a rib, deflected a bit, and busted a rib on the other side, and broke her offside shoulder. Because I hit her high, the chest cavity had to fill with blood before any dripped out.