ORIGINAL: Dengle
You can hunt with .223 here in FL as long as you are using a magazine in the rifle that holds 5 or less rounds.
Only restrictions we have are for pistols, and it depends if you use dogs or not. Without dogs, the case has to be longer that 1.25", 10mm and .45 win mag are only exceptions. With dogs, a derringer .22 would be legal if you wanted to. That said, most people use dogs and knives here anyways, Im the oddball.