Yes, it is legal. Texas does not permit the use of RIMFIRE guns for deer hunting, but any centerfire is legal. Wh ile it is legal, I personally do not recommend it. Yes, the .223 can kill a deer. It will also wound a lot of deer. It is simply too small to insure a clean kill.
No.
it is legal to hunt deer with a 223 in wv but it only has to be a .25 cal for rim fire
A 223 would be fine for a deer rifle but you need to make sure the (youth) person can hit the kill zone. I would suggest the 243.
New York State does not have a caliber requirement for deer, except to say that rimfire rounds may not be used. A semi auto rifle used for deer hunting may not hold more than six rounds.
Yes
.223 (maybe) definitely a .243. The BEST deer rifle is a 25-06 (Long story short .223 = good not much effect, .243 = GREAT for beginner, later on you will want a 25-06. 2-06 = BEST!)
I would recommend a 223 or a 243 rifle or a 28 Gage shotgun.
A rifle with a 5.56x45 chamber can utilise .223 Remington cartridges. A rifle with a dedicated .223 Remington chamber cannot accommodate 5.56x45 cartridges. A rifle with a .223 Wylde chamber can accommodate .223 Wylde, .223 Remington, and 5.56x45, but neither a rifle with a 5.56x45 or a .223 Remington chamber can accommodate the .223 Wylde cartridge.
.223 (maybe) definitely a .243. The BEST deer rifle is a 25-06 (Long story short .223 = good not much effect, .243 = GREAT for beginner, later on you will want a 25-06. 25-06 = BEST!)
.223 Remington can be cycled in a 5.56x45 rifle; 5.56x45 should not be cycled in a .223 Remington firearm.
no
It depends on what you mean. If you mean legally, many U.S. states require a caliber larger than .22 or 223, however, that IS legal in some states. If you mean what caliber will kill a deer, almost any rifle caliber will, but .22 or .223 is questionable, which is why many states prohibit that for deer hunting.