Company called Paradigm makes copy of the Duck Bill choke, used during vietnam, improved and now called the “gator” .......
http://www.paradigmsrp.com/gator-shotgun-spreader/
http://www.paradigmsrp.com/srp-store/product-category/srp-products/
With number 4 buckshot “packs” of anything are corrected easily.
Ha! You mentioned that before, but I gonna get one now.
Yer a font of info, amigo. Thanks.
Folks in VA might consider it too...
Play well with others!