I won't say I've never fired steel cases before, but I am not over joyed about doing so. No problems yet (used in rifles only) but it can't be reloaded so I won't buy it unless there are no other choices. They say steel is hard on extractors but so far no problems. Bought a few extra extractors just in case ($7 bucks each) and I save $10 bucks per box on the ammo. Bought a ton of it at the time and still using it. Hopefully I will be able to find brass next time that is affordable!