The SKS is not a target rifle. I've never noticed any differences in accuracy at up to 150 yards when the barrel was so hot that touching it for a second would have been something you'd only do once.
I've never fired my SKS beyond 200 yards, but within that distance I've found it to be an acceptable rifle for what it is. I wouldn't want one for anything beyond 350 yard shooting, but that's not what it was made for.
Chinese ones go for like just under 200 bucks, I don't think you'll regret your purchase so long as you remember it's not something the Russians would have given to their marksmen. For plinking and target shooting within reasonable distances, it's great fun. Can't argue with the ammo price either. As the poster above me said, the SKS is an effective rifle for combat at distances of up to 300 meters, possibly a little more. We don't use our SKS rifles against people here in Canada, thank goodness, but its decent capabilities as a combat rifle translate into fun paper punching for us. Get one, hell, get two!