Thanks for all the work and photos. On a side note, I don't remember which Fiocchi my buddy tried to shoot out of his Saiga, but it absolutely would not cycle. It was 9 pellet 2 3/4" 00 buck, not sure what the dram was. I tried one and it was the only round that has ever failed to cycle on my Benelli M2. I had to swear them off after that outing.
Oh yeah, I do remember that they were sold in 10 round boxes and were low recoil...... Good luck....