My main reason for doing this is I plan on buying an AK 47 very soon so my SKS won't get much use after that. So, rather than retire my SKS I decided to scope it and use it as varmint rifle, coyotes and such.
Most say the SKS is pretty much useless past 150 yards but I've heard others claim they've had very good results with a scoped SKS at 200+ yards. I can hit a paper plate with my Norinco SKS, iron sights at 100 yards all day long, so I thought adding a scope might increase my range, hopefully out to 200 yards. If I can drop a coyote in it's tracks at 200 yards I'll be very happy.