What part of "run any ammo" did you not understand?
Just joking.
Once broken in (1-200 rounds) most Saigas will eat anything you can load in the mag.
I have used cheap bird shot (the new unconverted gun does not like it but I have less than 50 rounds shot through it so far), my converted saiga will shoot the bird shot and hollow point, regular, rifled, 00 buck shot, or any other load you can think of or I have put in it.
It loves slugs and higher power type loads.