kansks, Welcome from Kentucky/Colorado!!! Personally, as far as ammo goes, usually anything normally shoots out of mine to include Yugo M67, Chinese and cheap Russian, corrosive or non-corrosive. That said, some of the best is Yugo M67, though most is corrosive. S&G Ammo still has it in bulk, as well as the Russian stuff.
Yugo strippers are some of the best, and S&G has M67 on strippers.
The Chinese SKS's (as well as most Russian, and all the others except for Yugo) have a chrome plated bore and chrome plated gas piston, so corrosive ammo isn't quite the big deal, just make sure you clean the rifle, especially the gas tube, after each firing session.
Cheers, Bruce Carnal.