Well I will put in my 10 cents. I shot a doe the other day with muzzy 4 blade 90 grain. She was quartering away, the range was about 40 yards. I shot her a glancing blow to her left shoulder. I didnt know that until later. I never did find the arrow. There was fresh snow and there was blood all over. I waited an hour, tracked her to a thicket where she immediately ran again to another thicket. Blood everwhere, easy trailing. I went to the house about 3 hours got my partner, my wife (haha). We bumped her out of the thicket, she staggered to another thicket, again leaving a heavy blood trail. I waited and followed where I shot her. On examining her, there was a vicious wound on her shoulder, not a killing wound. Heavy bood every where she went. I got her. Those muzzys fly good for me with my Mathews Ultra 2 set at 70 lbs. It shoots about 280 fps with a Beman 400 ics at 28 inches long. I use a drop away rest to get good feather clearance. Alot of helical on the feathers. Those muzzys cut good too!!!!