I've definitely been satisfied with Wolf ammo. As far as handgun calibers go, I've only tried specifically Wolf-labeled stuff only in 9x19 Para (but have tried Tula, Silver, Bear, Brown Bear in 9x18 as well, all of which are also Russian-made steel-cased ammo). Never any issues with feeding, ejecting, or anything else. The 9x19's I fired it from were my Kahr CW9 and Arcus 98DAC.
Tried Wolf in a variety of rifle calibers too, including .223/5.56, 5.45x39, 7.62x39, and .308, from AK-74's, WASR-10/63, VZ-58, Saiga 7.62x39, Saiga .308, Golani Sporter, and CETME. Never had a single problem with those either.