I do prefer the Silver Bear to the Wolf for general plinking. Accuracy isn't great of course; groups 2-3 times the size of those my handloads produce, and I'm not an expert handloader nor an expert shooter. When my gun is clean, it runs on gas setting 2 with no problem. I haven't tried to run it dirty.
I like the zinc plated cases over the lacquer for two reasons: 1) I suspect they have a greater degree of lubricity that will allow them to be extracted easier than lacquer. That is speculation on my part, but they seem to slide over each other easier than lacquer. 2) I find them more aesthetically pleasing... dumb reason, I know.
If I were going to attend one of those high round count training classes, this is the ammo I would take.
I have heard that the zinc plated cases are more susceptible to corrosion, but have never experienced any problem with it. I don't store my ammo out in the rain though.
I got some 62 gr. Silver Bear steel case ammo from him. It shoots fine, a problem twice with feeding from an open bolt that’s released. No problem if you put the magazine with bolt closed then cycle with the charging lever (at least so far, possibly statistical stuff).
This sounds like a magazine problem to me...
Overall, I would recommend it on the condition that you do not have high expectations for accuracy.