I am fan also, sounds like yours was set up for turkey hunting, or possibly deer with Forster slugs. Mine is choked mod. When I used it for all hunting I would load a spreader first followed with a regular shell making it a two shot gun good for grouse, the choke remains mod. After a while keeping the sequence in order became second nature. Not sure how much you would gain in a full choke. I bought mine with a lefty safety too. The bottom ejection made them attractive to the left handed I suppose. Mine still gets out, mostly for doves now though.
