Said for years I would never shoot a mechanical head because of the chance of failure. My FIL and another friend of mine shoot professionally and kept talking about Grim Reapers so I said what the heck and gave them a shot. That was about 5 years ago and have been shooting them ever since. No problems what so ever for me, unbelievable blood trails (if you need them) and complete pass thrus so far. Only 1 deer made it out of sight and it only made it about 40yd. Biggest deer I've shot with them was 220lb 9pt in Missouri. Blew thru him and stuck up 6"in the ground. Tried the 2" whitetail specials by reaper but blades seem to break too easy, really like the 1 3/8 cut the best. That's my $0.02