Sounds sympathetic, but should one be concerned with being humane or not? I've seen some pictures that made me second guess having to shot someone instantly...the feeling leaves soon after though..for I know if it must be done, it must be done.
If you have any doubts at all as to whether or not to shoot, you shouldn't be shooting. Sorry, that's just my first reaction. The only time that I'll ever shoot another person is when that person poses an immediate, serious threat to the lives and safety of myself or my family.
I am not concerned about being humane to someone trying to kill me - I am chiefly concerned about stopping the attack RFN