Just need some advice on shot loads for my cylinder bore 12ga. I'm using the thin overshot cards only. I have tried 60 grains of powder 2 os cards and equal amount of shot with 1 os card, and 70 grains of powder 4 os cards and equal amount of shot with 1 os card. With the 60 grains powder I'm getting anywhere from 10-15 shot on a 9in paper plate at 25 yds, and with 70 grains of powder I'm getting around 20 shot on 9in paper plate at 25 yds. Is that about right or should I be getting more shots in the plate?