I've shot an awful lot of deer with a .223/5.56, with various rounds. Soft points, Nosler partitions, OTMs, VMAXs, M193, and I have a mag of the Barnes TSXs waiting for the next one. These are/were what I had at the time.
When I plan to harvest a white tail or mule deer, I take a heftier caliber, usually a .308. Usually a ~150gr SP.
"Adequate"? Yes. Ideal, no. Like I said before, if you use a .223/5.56, for best results go heavy and get close. Heavy soft points or the new Barnes offerings look like your best options.
it's been shown time after time that .223 Remington is quite adequate for deer and similar-sized game
2012 National Zumba Endurance Champion
Hi Point 9mm, Lorcin .22, Bushmaster Carbon 15, Norinco SKS, Leapers 10x
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