I like the PRVI ammo in 125gr soft point. With my Girlfriends CZ bolt action I can keyhole them at 100 yards using a 3 point shooters rest. She shot a Boone and Crockett whitetail last fall with these rounds. I don't get that kind of accuracy with any of my SKS rifles but its good enough to shoot deer.
As far as scopes, I'm not sure there is a point of scoping an SKS. After 150 yards the bullet starts to rapidly drop and lose energy. Short of that, its a reasonable bullet for deer with open sights. My nephew loads a 150 grain soft point bullet for his SKS with good success but it sights and shoots different than the standard 125gr target stuff and soft points. I keep looking at scopes, but the jury is still out whether they are accurate or can hold a zero. Maybe someone else has some success with them and willing to share.