Just put the A3 flat top upper on my century built AR. Right up front, I do not care for the Russian ammo, but the polymer coated 62 grain stuff turned in 5 (3) shot groups under one inch center to center at 100 yards today. Not to clean burning, but accurate as heck. Beat any other stuff I had hands down. Other than cleaning, do you see any problems or possible damage to my SUR using this ammo?
In my opinion, for whatever that's worth

, if it works in your particular gun and from what you say it works pretty well, then go for it. This topic comes up often on just about every firearms/ar forum out there, and every time it seemingly opens a can of worms.
Some say it will all melt into your works and gum up your package. Yet there are quite a few folks who have purposely used it at carbine classes and matches with no problems, even using it in top-shelf AR's. Just as there are some manufacturers who state NOT to use it in their AR's - or it could VOID your warranty.
Personally, I feel safer knowing that every AR in the house has and can shoot just about anything I feed them with no issues ( and YES - that is including the poly coated Wolf). Mainly for the reason that...what if that's all you had available? Would you then just give up the fight because it might gum up your gun?

But then again, that's just my opinion, and in my guns.
I have used thousands of rounds of the lacquer and poly coated Wolf in my SKS's and Ak's without any issue. Yes, it does smell like "BBQ'ed cat crap" as someone so eloquently put it at the range. And Yes, it isn't the cleanest burning ammo out there. But hey..if it works for you and yours, then by all means, shoot it up. And if you don't like the poly coated, then buy some of their new brass .223 75gr. No, it isn't MATCH ammo, but it wasn't meant to be either. But I haven't had any problems with it either.
Slo