I just picked up a Sport 2. I understand it can shot both and understand that the size of the brass is slightly different. But any advantage of one over the other for just shooting targets, HD, etc... any problems running one or the other. I have been buying 5.56 ammo but ran into some good deals on .223.

Any words of wisdom would be appreciated. I am more of a handgunner who got the itch to get a AR.