Interesting thread..
I've used tons of Sierra's on whitetail deer through the years. They've never let me down and were quick killers. Most were exits, but I'm a lung shooter anyway. In fact, I don't recall a single bullet failing to exit.
I've used a bunch bullets from Barnes, Nosler, Hornady, Speer, Remington and Winchester.
I'd take any and all over a mono for lung shots on deer. I've never had a mono failure or fail to kill, but I've seen deer run some excessive distances when shot through the lungs with a mono. Shooting on bone or CNS is a different story...
