Got an 8x on a PSL/SSG-97. Once I sorted out the siderail mount issues, (tension adjustment and loose screws) it's been OK. Windage adjustments are coarse, but repeatable elevation has been great w/ about 500 rds fired.
Mine is a Belarus, w/ 3V illumination and 1200 yd choke range finder.
They do make a weaver compatible model as shown in crosshairs photos, in addition to the side mount.
Tossed the goofy accordion style eyepiece and factory front dangle lens cover for a set of Butler Creeks.
The illum feature is neat and I find myself hauling the PSL to shooting houses for afternoon/evening hunts to take advantage of the feature, and for the novelty.