I had 2 of the Saiga 12's over the years. The ones I had were back when they were about 300 bucks. One would shoot well, and the other was a POS that would only work with heavy buck. Needless to say, I could never get used to the whole Saiga shotty deal and sold both--the one that would not work for me was sent to Tony Rumore and made into a fire breathing SBR that works just fine for its current owner.
BTW, #4 Buck is a good house load.