So......is it ethical to headshoot deer with my 7STW with 120gr Ballistic Tips? At 3750fps almost any contact will blow the head clean off.
Bonded bullets are poor for headshots. I've seen a lot more gut shot deer go unrecovered since the advent of hunting shows preaching the wonders of strictly controlled expansion. With the older bullets the large tissue disruption could often help if you had a paunch shot. With the Barnes X or Bondeds you get a hole a fifth of the size for an exit.
Here's a question. In the grand scheme of things, do you think more deer have been lost to botched headshots (ie jaw shots) than to botched shoulder shots (ie gutshots)? I just found one today while muzzleloading that had been shot too far back.
Know your shot. Your skills determine your placement.