Q:I have a Remington 870 Wingmaster. It is an older model, 20 gauge, with a full fixed choke. I got the gun for hunting squirrels and rabbits, but I would really like to start grouse hunting. From what I've heard a full choke wouldn't be the preferred choice, as it is too tight. Would you recommend sending the gun to a professional to have it opened up? If so what would be the best constriction? and who would you send it to?