I had something strange happen to me 2 years ago. 145in 9pt at 15 yards, quatering away. at the shot, he turned uphill, then back down quickly, arrow disappearing into brown hide. As he ran off, i saw blood behind the shoulder, he stood downhill for 5min and trotted off. Found blood where he stood that looked bubbly (small pool, then nothing) and my arrow had a small line of blood from tip of broadhead to the back of the nock...looked and looked to no avil. that one haunts me as it's the only buck i've shot at with my recurve