Yeah, WCC is Winchester Cartridge Company. I've loaded all those headstamps in .308 without any problems. The primer pockets will hold up fine unless your presures are near max. (at least all mine have).
One thing I will warn you about, though, is to weigh some of those cases. I have old military brass that weighs a LOT more then commercial, and you should set any heavy ones aside and work up loads for them separately from the lighter commercial brass.
The military stuff I have all has a year stamped into the base (NATO + stamp and year). Like WCC 69 +, and it's around 10 gr. heavier then commercial .308 of recent manufacture. Maybe none of yours are like that, but it's worth checking out. That's a lot of reduced interior volume.
NNY I've never seen, but the chart says:
rvi Partizan-Namenska Proizvodnja, Titovo, Uzice 31000, Yugoslavia. These are actually Cyrillic letters equal to "PPU in the Western alphabet.
That would be Privi-Partizan that you see for sale now. Midway carries it, for one:
Privi-Partizan .308 ammo