never shot hevi shot before and wanted to try out of my new extrema. what choke do i need. i used and extra full in my 835 but never shot hevi shot. if i stay with copperplated shot i will get an extra full. had an undertaker before it shot well. not sure what extra full to get. i see beretta is now offering one for this gun. but would an extra full not be good with hevi shot. also my bore is chrome lined will it be effected by hevi shot. thanks