I've been handloading this caliber for a while now. Remington UMC is reloadable and you can get good deals on it once in a while. Winchester makes some thats reloadable as well. One issue though. At least my SKS, and all my friends (one guy has 6 he shoots regularly!) ALL dent the CRAP out of cases. Some could be straightened back out, but it's a bottle necked case, not much you can do to fix dents below the neck. My own, and other SKS's I've seen put some serious scratches down the lenth of the cases as well.
All the loading I do in 7.62x39 is with new Winchester brass, and 123gr. SP bullets. Accuracy over junk like Wolf, or surplus, Silver Bear, whatever, is notably better. Some of the SKS's we shoot like the Remington UMC just as well, but not many (and not mine).
If you think SKS's dent brass... Look at what's left after the stuff goes through an AK! At least mine beats the POOP outta cases, and kicks them no less than 20' straight out the side of the gun!
If you really want to re-use brass in this caliber, Remington has been marketing a sweet little bolt action! It's manufactured by CZ if I remember right, but they put a nicer walnut stock on the ones they stamp "Remington". Model 799 I think.
BTW, If you need clips (YES "clips") for the SKS, you can find great deals on them on ebay.