I have never used the Grim Reapers until this year. My son has for 4 season's and only one deer has fallen out of sight. They are nasty heads and leave a HUGE hole. As for proper placement I shot a deer 2 years ago and double lunged him. I was using the Wac' em 3 blade head. That deer ran something like 180 to 200 yards before tipping over. Not much of a trail at all to follow. It was a great hit and he did expire but I really wish the heads had done more damage.