I've shot quite a bit of Wolf steel. Some issues with shooting with mid-length guns that are on the under-gassed side, but no problems with carbine length guns. Same for Tula. Read similar feedback on the Tula, but my personal experience is that as long as you clean your chamber before going back to brass and that you have a gun that isn't on the under-gassed side. I generally avoid Tula these days, but I would if it was cheap and I was running low on brass.
I haven't had any issues with the steel cased ammo.
I didn't test the wolf ammo yet, but these are the velocity numbers i got from a 14.5" Faxon gunner match series barrel, 223 Wylde, shooting Red Army Standard:
2,911
2,922
2,933
2,933
2,934
2,937
2,950
2,951
2,954
2,962
2,964
2,973
2,977
Average: 2,946.2 fps
Standard Deviation: 19.9 fps
Here is the same ammo, same day, out of a 16" Faxon pencil (non match series) barrel, 5.56 NATO chamber:
2,999
3,021
3,039
3,055
Average: 3,028.5 fps
Standard Deviation: 24.1 fps
The 16" barreled upper has had at least 6,000 rounds through it at the time of testing. I'm not sure if this makes a difference at all.
I was using a Caldwell chronograph set up at 10 feet from muzzle at Koko Head. As you can see, the RAS isn't really "under powered" as much as a lot of people claim. Velocity numbers are still decently close to m193 out of a 16" barrel