From what I have read, you'll lose barrel accuracy before they do any wear to your extractor (which is cheap) or your chamber. That steel is pretty soft. People have difficulty in quantifying any additional wear in semi-autos with 10,000 rounds through them.
I know a lot of steel is military garbage. Sounds like that is not the steel you are interested in. I don't know, but I would expect even high quality steel case rounds to be somewhat less accurate due to weak obituation in the chamber. Bullet presentation to the lands is supposedly pretty important to accuracy, but I am not a precision shooter.
So, I have no first hand experience but that is what I have read and what I think. I have shot steel but it was blasting with government junk so that probably doesn't mean much to you.
I certainly don't think there would be any issue buying a box and seeing what it does. If it sucks in your rifle then you don't have to worry about all the speculation.