Can't help ya there with Az laws, but I wouldn't use FMJ's, soft points would be much better option for a humane killing shot, fmj's don't always garentee that, but shot placement is the key with any round, so they will work, but not my first choice for hunting. I doubt the sbr would be leagal for hunting though, or at the very least, prudent to use, it would kinda make you look like a "nut job" hunting with one. At least that would be my first impression if I saw someone hunting with one. Just me. We don't need anymore adverse impressions when it comes to our toys/sport or hunting in general. It would be like hunting with my VZ folder, yup it will drop a deer and shoots just fine, but it might leave a sour taste in some landowners mouth by me trucking around in there woods hunting with it!! And lets face it, it's getting harder and harder to find a place to hunt each year, we don't need to make it worse by running around the woods with stuff like that when there's much better options avalible!! Effectiveness and impression wise . But that's just my thoughts on it.