Finally, something that I know an answer to.
I have a handi rifle in .223 ultra, Bull barrel. I have shot about 100 rounds of Wolf ammo through it. I can' t say if exact pressures are + or minus, but by looking at the primers they aren' t flattening out or anything. Accuracy is actually quite good, have shot several groups at 100 yds at 1" or less. The steel cases are painted with a clear coat of some sort. I' ve never had one rust, and many have been wet a few times. The place where I bought my rifle has the Wolf ammo the cheapest I' ve seen. Even cheaper than dirt. It' s called Centerfire Systems, out of Versailles, Kentucky.
I also have an AK variant type rifle made in Bulgaria. Bought it new a few years ago. With Wolf ammo in it, (7.62x39) I can shoot quite accurate at 200yds. (with a very cheap 2.5 power scope attached)
One thing I must add here. In Wolf 223 I used their FMJ bullets. In 7.62x39, I used FMJ' s and their 122 grain hollow points. Yeah, the points are hollow alright, but after shooting a few of them THROUGH a 10" block of dry Red-oak we retrieved a couple of the bullets. Not only did they not expand, but two of them looked good enough to reload. No kidding. Nothing but marks in the copper jacket from the rifling. My buddy and I ground one of the bullets in half, so we had a cross-section of it. Those bullets are all steel except for the lead base.

Just don' t expect them to " open up" on an animal or anything. Let me know how it works for you