I shoot steel cased ammo through both my 185-series and my 582-series Tactical all the time. I've had no problems at all and, while Herters and TulAmmo may not be as accurate as more expensive rounds, they sure are fun! And relatively cheap (or they were until recently).
This is just my opinion, but I'm no fan of steel cased ammo, I know many who shoot it, some have had no problems, but a couple guys have suffered broken bolts and extractors from it. Besides you can't reload the stuff.
Steel case ammo is ok for the Eastern Block rifles like AK's, AKM's, and SKS's, but I wouldn't use it in an AR, M1A, or my Mini-14.....YMMV