I've been using My "Jons Exclusive" Cz 410 sxs quite a bit .Fits me very well,shoots great. It is choked Imp Cyl/Mod. I want to hunt some Federal wildlife areas but they require steel shot.I was wondering since it is a 410 small barrel diameter how steel would do out of the Mod. barrel.I was using a Tristar 410 O/U with choke tubes(skeet and Imp) Just really want to use the sxs now instead. I have been using #7 shot .I'm shooting rabbits the Beagles circle back to me.Any input from all you guys would be helpful.I'm just wondering about the shot bridging in the Mod barrel.I'm not worried about my patterns, just small barrel being able to handle it.