I have shot 30 rounds of it through my AR and it shot fine. I have shot about 2000 rounds of it from my Mini 14 and had one stuck case but it mortared out no problem.
It was also about the 4th fast 30 round mag then I let the chamber cool a little on a round, pulled the trigger. It fired but didn’t eject. I would not normally shoot it that abusively or get it that hot but I wanted to see what it took to stick.
Not all steel case is created equal, it is only the lacquer coated variety that has the sticking ability and the chamber has to cool a little after it “cooks” the lacquer. I don’t think you can readily stick Teflon coated or the silver looking zink coated steel case either..
The other thing about steel case is extractor wear. If the extractor isn’t hardened properly they could wear the extractor down prematurely…..I have never seen this though.
Steel case ammo is good SHTF ammo and I have a couple thousand stashed between a couple places. It is battle accurate all day and it is disposable as far as reusable resources go, it is one of the reasons I decided to go with the large latch charging handle when I built my AR……much easier to force out problem ammo than the OEM style charging handle