The jap guns are all ok to shoot steel in choked or not. This was according to Broiwning. The invector and invector plus bbls are easier to choose what size. With full fixed chokes i wouldn't shoot anything larger than 3's up to Modified use no larger than BB maybe BBB anything larger use IC or Skeet or cylinder. Now this is in Jap made Brownings only. No steel at all in the Belgian..not even in cylinder. I've never seen a Belgian that split although I have heard of it...but they sure will bulge at the choke area easily. I saw a full choke bulge with the first shot when a fellow shot an ounce and a quarter of 4's at a duck. Killed the duck but ruined the bbl.
