From time to time I have to put a heifer or some other critter down due to injury or other.
I have carried a 10mm for years. IF I can get a clear, standing head shot where I can place the round precisely, I will shoot it with the 10mm.
I would not for any reason use it if I could not get that shot. Sadly, I learned a long time ago that the 10mm does not have the power to kill an 800 pound bovine cleanly or mercifully with a shot to the body.
I have a great respect for the 10mm, but I"m not sure I am a good enough shot to hit a bear exactly where I would want to, and I ain't too keen on that critter givin' me a 1911 suppository