Does anyone know why CCI Blazer ammo might be banned at some shooting ranges? I've read in some ammo reviews that it's not only the aluminum cased ammo but also the brass cased ammo as well. I just purchased 2 boxes of Blazer 357 mag with aluminum casing and even though they're not banned at the range where I go, I'm curious why they would be banned at all. I'll be grateful for some answers.