Many gun ranges don't allow aluminum or steel cased ammo. Not making a comment on the "why" of this policy, just bringing up a point that may apply. I've seen many shooters turned away because all they had was steel or aluminum cased ammo. Kinda ruins the plans for that day.
Tried it. Didn't like it. Won't buy it again unless I'm desperate. Found it to be smoky, dirty and smelly. Reminded me of Magtech, which I don't care for either. FWIW, I also tried it in the brass casing and had no problem with that.