I have an old Charles Boswell SxS Pigeon gun with tight fixed chokes (probably F/F or tighter if possible, but haven't measured). I'm thinking about sending to Briley to open them up a bit. I use this mostly for trap but would like to use for Sporting Clays too. I obviously don't want sub-gauge inserts and/or multi chokes in this gun. I'm not a competition shooter and screw-in chokes just doesn't seem "right".

What would you recommend opening these up to IC/M or M/IM or leave them (it's a refurbished gun so no collectors value)?