I just had this same conversation Friday night with two gunsmith friends of mine.
My 1911 will not eject Wolf, the only brand up til now that it will not cycle properly. Now I have a batch of CCI Blazer Brass that will not eject. I took the pistol in to get it a checkup and it is in absolutely perfect working condition, as expected. The theory is that the Blazer Brass is loaded too light to get the casing out of the chamber and ejected before the next round is stripped from the mag into the chamber. The empty is actually on its way to being pushed back into the chamber, bending the sides of the casing and thus causing jams.
I ordered a lighter spring to see how that works since we can't find any other issues so far. The thought is that the lighter spring will allow proper battery of the pistol and let me shoot the potentially lighter load.
In the process of discussing shooting the Blazer Brass out of my 1911 and various other weapons, shooting Wolf also came up. I was given a lecture on why I should not shoot steel cased ammo......not necessarily Wolf, just not steel cased anything in my pistols. Basically it came down to if your firearms have a chrome lined barrel/chamber.....then steel is fine. If they do not, then don't shoot it.
The explanation was that brass expands and contracts more readily than the steel cased when fired. The extractor pulls the brass casings out with more ease than steel and the wear and tear on the chamber/weapon is far less than with steel. The steel expands and contracts upon firing also, but contracts to a far lesser degree making extraction tighter and more difficult for the weapon and causing more wear and tear on chambers, parts, etc.
It was suggested that an occasional box of steel cased would be no problem, but a case would do damage and I should not consider a steady diet of steel cased ammo for any of my pistols. The topic of Commie-bloc guns vs. US guns came up and the answer was that the country doesn't matter. The chrome lined is what makes the difference. It gives protection against potential wear using steel cased ammo.
I also asked about extractors being worn or broken due to using steel cased. It was stated that if an extractor gets that worn down from using steel cased it is probably not a good one and it is highly unlikely that one would be actually broken due to steel cased ammo.
Now having said all this, both smiths inspected my 1911 (didn't have any other guns that I've shot steel out of for them to look at) and said it looked fine. I have shot several boxes of Wolf out of it (no other brands of steel) but only a few since it doesn't eject properly. I can't cycle it so I don't buy it. I have shot about 1,000 rounds out of my G23, I have shot about 1500 out of my AR (just to test it and see how it worked. I shoot Lake City now.) and about 3,000 out of my AK since that's all I shoot out of it.
Input, comments, thoughts?