Do as you want, however you also obviously choose to ignore the combined experience of people like BCR and others who have actually done it over and over.
Years ago I had doubts. Then I visited here and realized without ever using one on Deer, that If it didn't work for me, the fault would not lie in the fact that it was a .223cal.
The one thing I find perplexing about this place is the often "have you ever done it" reply. I've never shot an Elephant, but if I was going to do so the choice of an appropriate cartridge and caliber would be down on my list. Others have already answered the question for me.
I hardly ignored anything. Since I agreed that it got the job done way back in the thread.
I simple stated why I wouldn't use it. You guys sure get uptight if someone doesn't agree with your bullet choice.
I do have one question though. Why use it? What advantage does it have over a bigger caliber? Is no recoil that important? What does it do that a .243, 6.5x55, .270 won't do too? Just curious.
