I was told that using aluminum cased ammo could be damaging to the breech face of my gun. I have a 1911 in 9mm and haven't had any problems so far using CCI Blazers, that I can see anyway. It definitely shoots cleaner in my gun than Winchester's white box does. The cost factor is a big plus. So right about now, I don't know whether to give up on shooting Blazers or not. How do you guys, and gals feel about it.