i would not recommend ever shooting sabots through a smooth bore barrel with a choke. first off they are not designed for that and will not give you great patterns most likely. thats what the foster slugs have been created for. secondly, i a mod choke should never be used for shooting slugs unless you want to bulge your barrel. improved cylinder is the common choice or cylinder works. and with buckshot you have to watch which chokes you shoot it through because due to its large size, if its shot through a tight constriction it will damage the choke after some time if there is any space between the wall of the barrel and wall of the choke. a good all around choke would be somethin like a patternmaster or wad wizard for buckshot and regular shotshells. slugs you can just go with a factory IC. Keep in mind if anything happens to the gun with an after market choke in the barrel, Benelli does warranty and damage.