I have read that the main issue for steel is the ejector will wear out faster but the savings of the ammo may be much greater than the cost of replacing the ejector a little sooner.Isn't steel hard on some actions if used by the thousands? Plus it cannot be reloaded-correct? That's mainly why I never tried it.
I recently read a long forum discussion somewhere from 2011 about difference between steel and brass cased ammo. One posting stated that back then steel case ammo was about $4 cheaper than brass cased ammo. I recently bought Tula steel case ammo from Bucking Horse Output on sale for $13 a box or about $4 cheaper than brass. I don't know offhand what the prices were back in 2011 but assume they were lower so a savings of $4 on steel was a bigger percentage discount.