I can't understand this one, I shot a buck Friday from 18 yards and I was 20 feet up a tree. I made a good shot I thought, I use a fire nock and could see the arrow impact as it passed through the deer. The buck was broad side and I hit him about just a little over 1/2 way up his rib cage, he jumped and kicked both back legs out and ran off. I saw him stop about 75 yards away and just stood there and then he walked off. I got to my arrow and it was covered with red slimy blood, the thing that blows my mind is that I never found one drop of blood anywhere, I used a 100 grn. slick trick broad with a arrow speed of 300 fps. Has anyone else experienced such a thing?