Deer hunting with a .223

[TRnCO]

as was mentioned, it isn't about limiting the use of AR's. You can carry any AR that meets the minimum requirement. As an example, an antelope buck that I shot back in 2011 with a .243 wssm. I might also mention that this caliber, using a modified 10 rd. mag. only holds 4 single stacked rounds, meeting the 5 rd. max allowable rounds in the rifle.
004 by Tim Richard, on Flickr