Ok, here goes...
The SKS has a typical sliding ramp rear sight that is pre-regulated to reach out to approximately the ranges stated on the sight. The rear sight also has a "battlesight" setting which is with the slider all the way back. The battlesight setting affords basically the military equivalent to the maximum point-blank range, which for an SKS would be about 200 yards. It allows a soldier in close contact to quickly set his sights to engage man sized targets a close to medium ranges. This might not be accurate enough to hit an 8" target though, which I consider to be minimum accuracy for deer at what ever range.
But basically, if the round hits low, slide the bar forward. This will raise the rear sight and also the strike of the rounds. If you want to lower the strike, slide the bar back toward you, but keep in mind that if you go all the way back, the sight will jump back up to the battlesight setting.
On the SKS, if you need to adjust the horizontal zero, you'll need to either have a large drift punch, or better yet, an SKS front sight tool. This allows you to drift the front sight to adjust horizontal POI. Remember that since it's the front sight, the adjustments are backwards (i.e. if you need to make the impacts go left, you drift the front sight to the right). If you have an SKS front sight tool, you can also fine tune the elevation of the front sight to match the ranges on the read sight. This is done by turning the front sight in or out to go up or down respectively.
I found a link that explains these adjustments, and also provides helpful pictures to illustrate what I'm talking about.
http://www.surplusrifle.com/sks/sights/hs.asp
Hope this helps.
Mike
Sighting in a SKS ????
