I recently posted two videos regarding failures of rifles (Tanker Garand and M1 Carbine) due completely, or partially to poor quality steel case ammunition. I only shoot quality brass ammunition or my own reloads in my mil surps. The exception are my com bloc rifles in 7.62x39 or 7.62x54r as these rifles are manufactured to use the steel stuff. Even with them I have become selective with the steel case ammunition I feed them.
Some cut above steel case ammunition brands in 7.62x39mm I have found are:
Sellier & Bellot (if you can find it) - Very accurate ammunition from a quality manufacturer.
Hornady Steel Match - Eastern European Berdan primed steel cases loaded by Hornady with SST bullets. Excellent stuff at a very good price, but, again, not always available. In the past I've found it for as little as $30.00 for a box of 50. When I find this I buy it on the spot.
Barnaul - Also marketed as Brown Bear or Silver Bear, it is also the ammunition sold by Academy under their proprietary Monarch brand. This stuff is usually available at very popular prices. IMHO the best of the Rooskie ammo.
Russian Milsurp - Sold by a variety of sources and distinguishable by its olive green cases, red sealer around the bullets and primers, and Russian/Soviet manufacturer codes and dates. I see this very seldom now.
I stay away Wolf or Red Army Standard because I find it is just too inconsistent, and avoid Tula ammo like the plague.
For emphasis, I would never, ever shoot any steel case in any rifle other than com bloc manufactured, this especially applies to M1s, M1 Carbines or AR platforms.
My devalued $.05. Your mileage may vary.