I have recently run 1000 rounds of it throu (3) CMMG/DMPS AR/M-4's carbines. They all ran 100% throu the entire case, No FTF, FTE ect. They are all NON-crome lined 1/9 twist regular old C/M barrels too...
Yes it is dirty. But it's cheap and it goes bang. All (3) of my CMMG/DPMS' carbines went right around 2-3"@100yrds (5 shot groups) with a hot barrel, off a rest, with iron sights - using the $239.00 per 1000rnds Silver Bear 62gr JHP.
I also have a Model 1 Sales 16" L/W CAR15A2 I built about 8-10yrs ago on a Bushmaster loweer that has digested thousands of Wolf, Brown Bear, Silver Bear and Barnhaul steel cased .223 ammo with no real problems other than the chamber getting gummed up a bit from the laquer cased Wolf when it first came out... Never a problem at all from the newer poly coated Wolf.
Some have had extractors break from the steel cases and I think its very plausilable as it's one of the many a weak spots in the AR platform. However if you clean your AR everytime you fire it... you'll remove the bolt and dissassemble it to clean and inspect the extractor... I'm lucky as in the time I've been shooting mine I've not had one break.
Keeping an AR clean is the key to reliable function. Always has been and always will be. The Marine Corps drummed that into my head. It takes a bit of extra time to clean one properly after shooting Wolf or the like, but for the cost it's good plinking/training ammo and I shoot as much as I can afford.
Will