The Saiga has way too many things going against it to be anything more than about a 2MOA rifle IF you got a great one by some mistake of manufacturing. Most of them shoot 3MOA or a little worse.
That has been the reputation with 2-3 MOA Russian ammo that performs the same in my Rem 700 heavy barrel vss that otherwise shoots 1/2 or better with Federal match ammo. If anyone happens to shoot submoa with wolf black box ammo in a bolt rifle, I would have to see that to believe it. Until then, I would have to believe it is the ammo that is the issue at hand.