Wyosmith, I think that worrying about what hunters use is the old "A solution looking for a problem." From Internet chatter here and at THR, it doesn't appear that losing deer from use of a .223 is of any significance. Too many happy campers, as near as I can tell.
We've had the same thrash about the 7.62x39.
The bullet folks R&D has given us useful bullets for deer and as near as I can tell, hunters look to buy effective ammo.
You're from BATFE? Come right in! I use all your fine products!