It's interesting that you say that we're not trying to kill a grizzly...I visited at length will a guy who was up here for a grizzly hunt. He hunted almost everything with a .220 swift. He felt it was the best killing cartridge on the planet and he did use it to kill his grizzly. Congratulations to him, I'm glad for him that it worked out.
I disagreed with his choice, but it worked for him. My point would be that there are many calibers that give better assurance for a clean humane kill. Why risk wounding a fine animal, antelope or grizzly, just to say you killed it with a little caliber.
Just my point of view, I know not everyone shares it.
I know the old saying "dont knock success" but leave me out of a 220 swift and a grizzly bear!
Keystone 1, Over!
" I am lost in the dust of the chase that my life brings"