I need a little help here. I am looking all over for a fully rifled slug barrel for my 12ga 1300 winny and can't figure out if such a thing actually exists. I've seen "deer barrels" which appear to be smooth bore with sights but nothing that is definitively rifled. I want to shoot sabot slugs and think the rifled barrel is my best option, does anyone know for sure if they exist and/or where I can find one. It doesn't have to be OEM, aftermarket is fine. Thanks.