Man something aint right there.
I usually sight in an SKS on something approximating a 3x5" card and I can see it over the sight post just fine. Mind you thats over, not on. Like Buck1950 said, use a 6 o'clock hold.
I mean if it covers 10" at 100 good luck ever hitting a torso at 3 doing it that way. You'd aim for midsection from 0-300 using the battle sight setting. Not with your sight covering a target, right?
Webley, you're getting 2.5" 10 shot groups at 100 yards from an SKS shooting surplus? Buy a lottery ticket lol. Even tightened/shimmed up, wow.
The 4" 10 shot groups surprise me even.