The last commercial reloaded I talked to was pointing out how nice his brass was. I asked if he was using stainless steel, as it looked about like mine. Nope, ceramic. He went on to tell me that if he leaves the brass in too long, all that is left is dust. Think that ceramic may be a little ruff of the brass. Makes me more scared of using someone else's reloads.
When I was still in NY my LGS in Hopewell Junction (Collector Rifle & Ammo) used to sell bags of 100 5.56 Israeli reloads and I never had a problem with them they all went bang properly when fired and hit the target, I figured if anyone knows reloads its the Israelis since they are seasoned warfighters.