I usually would not ask such a dumb question, but here goes. I was given around 500 rounds of Wolf steel ammo in .223. I am real hesitant about firing through my AR-15. Is it safe? I have never used steel cased ammo in anything other than my AK, or SKS. I have been told that this is a no-no to fire steel through the AR-15. I am all too aware of the delicate nature of the AR, as I am ex-Army, and know how touchy these weapons can be. I probably will never use this ammo except in an extreme emergency situation, and only after I have depleted all other ammo. Just wondering. Any help, thanks.