I like my guns too much to feed them steel. They get brass, and since I like reloading, they seldom get berdan primed brass.
I'm not going to say don't shoot steel, its your gun. Some people say they have trouble with it, others say its fine. I'll sometimes shoot some milsurp steel cased ammo, out of combloc weapons, but never out of anything I value highly. I wouldn't buy any new made stuff, but thats a personal thing, I have lots of brass already.
Just remember, while there are exceptions, with ammo, most of the time you get what you pay for.
If you are on a budget, and it works for you, go ahead. But I think you would be better off using reloadable brass, and reloading it. Thats the other beauty of brass cases, once you fire steel, you're done, except for what the scrap guy will give you for it. You can reload brass until it fails, then get something from the scrap guy!